641161507 has 16 divisors (see below), whose sum is σ = 745385472. Its totient is φ = 540175680.

The previous prime is 641161463. The next prime is 641161513. The reversal of 641161507 is 705161146.

641161507 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 641161507 - 2⁷ = 641161379 is a prime.

It is a super-2 number, since 2×641161507² = 822176156117022098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641162507) 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, 95532 + ... + 102022.

It is an arithmetic number, because the mean of its divisors is an integer number (46586592).

Almost surely, 2^641161507 is an apocalyptic number.

641161507 is a deficient number, since it is larger than the sum of its proper divisors (104223965).

641161507 is a wasteful number, since it uses less digits than its factorization.

641161507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6738.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 641161507 is about 25321.1671729405. The cubic root of 641161507 is about 862.2948924029.

The spelling of 641161507 in words is "six hundred forty-one million, one hundred sixty-one thousand, five hundred seven".