495666378 has 80 divisors (see below), whose sum is σ = 1154165760. Its totient is φ = 158824800.

The previous prime is 495666373. The next prime is 495666401. The reversal of 495666378 is 873666594.

It is a super-3 number, since 3×495666378³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (495666373) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1149823 + ... + 1150253.

It is an arithmetic number, because the mean of its divisors is an integer number (14427072).

Almost surely, 2^495666378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495666378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577082880).

495666378 is an abundant number, since it is smaller than the sum of its proper divisors (658499382).

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

495666378 is a wasteful number, since it uses less digits than its factorization.

495666378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 696 counting only the distinct ones).

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

The square root of 495666378 is about 22263.5661563910. The cubic root of 495666378 is about 791.4008036728.

The spelling of 495666378 in words is "four hundred ninety-five million, six hundred sixty-six thousand, three hundred seventy-eight".