261250364 has 6 divisors (see below), whose sum is σ = 457188144. Its totient is φ = 130625180.

The previous prime is 261250351. The next prime is 261250411. The reversal of 261250364 is 463052162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32656292 + ... + 32656299.

It is an arithmetic number, because the mean of its divisors is an integer number (76198024).

Almost surely, 2^261250364 is an apocalyptic number.

It is an amenable number.

261250364 is a deficient number, since it is larger than the sum of its proper divisors (195937780).

261250364 is a wasteful number, since it uses less digits than its factorization.

261250364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65312595 (or 65312593 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 261250364 is about 16163.2411353664. The cubic root of 261250364 is about 639.2719292145.

The spelling of 261250364 in words is "two hundred sixty-one million, two hundred fifty thousand, three hundred sixty-four".