641755315 has 16 divisors (see below), whose sum is σ = 813772800. Its totient is φ = 484859232.

The previous prime is 641755271. The next prime is 641755339. The reversal of 641755315 is 513557146.

It is a cyclic number.

It is not a de Polignac number, because 641755315 - 2¹⁵ = 641722547 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26235 + ... + 44404.

It is an arithmetic number, because the mean of its divisors is an integer number (50860800).

Almost surely, 2^641755315 is an apocalyptic number.

641755315 is a deficient number, since it is larger than the sum of its proper divisors (172017485).

641755315 is a wasteful number, since it uses less digits than its factorization.

641755315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70746.

The product of its digits is 63000, while the sum is 37.

The square root of 641755315 is about 25332.8899851557. The cubic root of 641755315 is about 862.5610133972.

The spelling of 641755315 in words is "six hundred forty-one million, seven hundred fifty-five thousand, three hundred fifteen".