755156661 has 16 divisors (see below), whose sum is σ = 1175199744. Its totient is φ = 422336304.

The previous prime is 755156657. The next prime is 755156671. The reversal of 755156661 is 166651557.

It is not a de Polignac number, because 755156661 - 2² = 755156657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755156651) 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, 381565 + ... + 383538.

It is an arithmetic number, because the mean of its divisors is an integer number (73449984).

Almost surely, 2^755156661 is an apocalyptic number.

It is an amenable number.

755156661 is a deficient number, since it is larger than the sum of its proper divisors (420043083).

755156661 is a wasteful number, since it uses less digits than its factorization.

755156661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765160.

The product of its digits is 189000, while the sum is 42.

The square root of 755156661 is about 27480.1139189778. The cubic root of 755156661 is about 910.6378255919.

The spelling of 755156661 in words is "seven hundred fifty-five million, one hundred fifty-six thousand, six hundred sixty-one".