261014164 has 6 divisors (see below), whose sum is σ = 456774794. Its totient is φ = 130507080.

The previous prime is 261014161. The next prime is 261014219. The reversal of 261014164 is 461410162.

261014164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 257923600 + 3090564 = 16060^2 + 1758^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261014161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32626767 + ... + 32626774.

Almost surely, 2^261014164 is an apocalyptic number.

It is an amenable number.

261014164 is a deficient number, since it is larger than the sum of its proper divisors (195760630).

261014164 is a wasteful number, since it uses less digits than its factorization.

261014164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65253545 (or 65253543 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 261014164 is about 16155.9327802513. The cubic root of 261014164 is about 639.0792129811.

The spelling of 261014164 in words is "two hundred sixty-one million, fourteen thousand, one hundred sixty-four".