645467410 has 48 divisors (see below), whose sum is σ = 1359688896. Its totient is φ = 216113184.

The previous prime is 645467393. The next prime is 645467437. The reversal of 645467410 is 14764546.

It is a self number, because there is not a number n which added to its sum of digits gives 645467410.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126937 + ... + 131923.

It is an arithmetic number, because the mean of its divisors is an integer number (28326852).

Almost surely, 2^645467410 is an apocalyptic number.

645467410 is an abundant number, since it is smaller than the sum of its proper divisors (714221486).

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

645467410 is a wasteful number, since it uses less digits than its factorization.

645467410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087 (or 5044 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 645467410 is about 25406.0506572745. The cubic root of 645467410 is about 864.2209163385.

The spelling of 645467410 in words is "six hundred forty-five million, four hundred sixty-seven thousand, four hundred ten".