632620645 has 8 divisors (see below), whose sum is σ = 785322360. Its totient is φ = 488644800.

The previous prime is 632620613. The next prime is 632620657. The reversal of 632620645 is 546026236.

It can be written as a sum of positive squares in 4 ways, for example, as 170929476 + 461691169 = 13074^2 + 21487^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 632620645 - 2⁵ = 632620613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 632620645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2181306 + ... + 2181595.

It is an arithmetic number, because the mean of its divisors is an integer number (98165295).

Almost surely, 2^632620645 is an apocalyptic number.

It is an amenable number.

632620645 is a deficient number, since it is larger than the sum of its proper divisors (152701715).

632620645 is a wasteful number, since it uses less digits than its factorization.

632620645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362935.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 632620645 is about 25151.9511171599. The cubic root of 632620645 is about 858.4489100239.

The spelling of 632620645 in words is "six hundred thirty-two million, six hundred twenty thousand, six hundred forty-five".