761162561 has 8 divisors (see below), whose sum is σ = 787688448. Its totient is φ = 734760000.

The previous prime is 761162543. The next prime is 761162569. The reversal of 761162561 is 165261167.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 761162561 - 2¹⁸ = 760900417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (761162569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18185 + ... + 43046.

It is an arithmetic number, because the mean of its divisors is an integer number (98461056).

Almost surely, 2^761162561 is an apocalyptic number.

It is an amenable number.

761162561 is a deficient number, since it is larger than the sum of its proper divisors (26525887).

761162561 is a wasteful number, since it uses less digits than its factorization.

761162561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61663.

The product of its digits is 15120, while the sum is 35.

The square root of 761162561 is about 27589.1747067577. The cubic root of 761162561 is about 913.0456104221.

The spelling of 761162561 in words is "seven hundred sixty-one million, one hundred sixty-two thousand, five hundred sixty-one".