495599640 has 128 divisors (see below), whose sum is σ = 1593768960. Its totient is φ = 122845184.

The previous prime is 495599633. The next prime is 495599681. The reversal of 495599640 is 46995594.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 167857 + ... + 170783.

It is an arithmetic number, because the mean of its divisors is an integer number (12451320).

Almost surely, 2^495599640 is an apocalyptic number.

495599640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 495599640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (796884480).

495599640 is an abundant number, since it is smaller than the sum of its proper divisors (1098169320).

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

495599640 is a wasteful number, since it uses less digits than its factorization.

495599640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041 (or 3037 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 495599640 is about 22262.0672894500. The cubic root of 495599640 is about 791.3652832234.

The spelling of 495599640 in words is "four hundred ninety-five million, five hundred ninety-nine thousand, six hundred forty".