665367498 has 24 divisors (see below), whose sum is σ = 1517505600. Its totient is φ = 210115944.

The previous prime is 665367491. The next prime is 665367541. The reversal of 665367498 is 894763566.

665367498 is a `hidden beast` number, since 66 + 536 + 7 + 49 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (665367491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972418 + ... + 973101.

It is an arithmetic number, because the mean of its divisors is an integer number (63229400).

Almost surely, 2^665367498 is an apocalyptic number.

665367498 is an abundant number, since it is smaller than the sum of its proper divisors (852138102).

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

665367498 is a wasteful number, since it uses less digits than its factorization.

665367498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945546 (or 1945543 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 665367498 is about 25794.7184128844. The cubic root of 665367498 is about 873.0126315371.

The spelling of 665367498 in words is "six hundred sixty-five million, three hundred sixty-seven thousand, four hundred ninety-eight".