261034664 has 32 divisors (see below), whose sum is σ = 535019040. Its totient is φ = 118411200.

The previous prime is 261034621. The next prime is 261034679. The reversal of 261034664 is 466430162.

261034664 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 261034664.

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, 44867 + ... + 50349.

It is an arithmetic number, because the mean of its divisors is an integer number (16719345).

Almost surely, 2^261034664 is an apocalyptic number.

It is an amenable number.

261034664 is an abundant number, since it is smaller than the sum of its proper divisors (273984376).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261034664 is a wasteful number, since it uses less digits than its factorization.

261034664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041 (or 6037 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 261034664 is about 16156.5672096519. The cubic root of 261034664 is about 639.0959435941.

The spelling of 261034664 in words is "two hundred sixty-one million, thirty-four thousand, six hundred sixty-four".