261125662 has 16 divisors (see below), whose sum is σ = 448081920. Its totient is φ = 111801528.

The previous prime is 261125633. The next prime is 261125789. The reversal of 261125662 is 266521162.

It is a super-2 number, since 2×261125662² = 136373222709876488, which contains 22 as substring.

It is a congruent number.

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, 6639 + ... + 23797.

It is an arithmetic number, because the mean of its divisors is an integer number (28005120).

Almost surely, 2^261125662 is an apocalyptic number.

261125662 is a deficient number, since it is larger than the sum of its proper divisors (186956258).

261125662 is a wasteful number, since it uses less digits than its factorization.

261125662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18255.

The product of its digits is 8640, while the sum is 31.

The square root of 261125662 is about 16159.3830946605. The cubic root of 261125662 is about 639.1701989889.

The spelling of 261125662 in words is "two hundred sixty-one million, one hundred twenty-five thousand, six hundred sixty-two".