641402315 has 16 divisors (see below), whose sum is σ = 779090592. Its totient is φ = 506870784.

The previous prime is 641402239. The next prime is 641402317. The reversal of 641402315 is 513204146.

641402315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641402315 - 2¹⁶ = 641336779 is a prime.

It is a super-2 number, since 2×641402315² = 822793859374718450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641402317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366272 + ... + 368018.

It is an arithmetic number, because the mean of its divisors is an integer number (48693162).

Almost surely, 2^641402315 is an apocalyptic number.

641402315 is a deficient number, since it is larger than the sum of its proper divisors (137688277).

641402315 is a wasteful number, since it uses less digits than its factorization.

641402315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2606.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 641402315 is about 25325.9217996108. The cubic root of 641402315 is about 862.4028327141.

The spelling of 641402315 in words is "six hundred forty-one million, four hundred two thousand, three hundred fifteen".