495678690 has 288 divisors, whose sum is σ = 1553924736. Its totient is φ = 113218560.

The previous prime is 495678679. The next prime is 495678697. The reversal of 495678690 is 96876594.

495678690 is a `hidden beast` number, since 495 + 67 + 8 + 6 + 90 = 666.

It is a super-2 number, since 2×495678690² = 491394727440232200, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (495678697) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6981355 + ... + 6981425.

It is an arithmetic number, because the mean of its divisors is an integer number (5395572).

Almost surely, 2^495678690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495678690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776962368).

495678690 is an abundant number, since it is smaller than the sum of its proper divisors (1058246046).

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

495678690 is a wasteful number, since it uses less digits than its factorization.

495678690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 495678690 is about 22263.8426602417. The cubic root of 495678690 is about 791.4073562294.

The spelling of 495678690 in words is "four hundred ninety-five million, six hundred seventy-eight thousand, six hundred ninety".