665315046 has 96 divisors (see below), whose sum is σ = 1648902528. Its totient is φ = 199376640.

The previous prime is 665315041. The next prime is 665315107. The reversal of 665315046 is 640513566.

It is a super-2 number, since 2×665315046² = 885288220867964232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 665315046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665315041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517921 + ... + 519203.

It is an arithmetic number, because the mean of its divisors is an integer number (17176068).

Almost surely, 2^665315046 is an apocalyptic number.

665315046 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 665315046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824451264).

665315046 is an abundant number, since it is smaller than the sum of its proper divisors (983587482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665315046 is a wasteful number, since it uses less digits than its factorization.

665315046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 665315046 is about 25793.7016730829. The cubic root of 665315046 is about 872.9896905999.

The spelling of 665315046 in words is "six hundred sixty-five million, three hundred fifteen thousand, forty-six".