761142645 has 12 divisors (see below), whose sum is σ = 1319313996. Its totient is φ = 405942720.

The previous prime is 761142637. The next prime is 761142647. The reversal of 761142645 is 546241167.

761142645 is a `hidden beast` number, since 7 + 6 + 1 + 1 + 4 + 2 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 531256401 + 229886244 = 23049^2 + 15162^2 .

It is not a de Polignac number, because 761142645 - 2³ = 761142637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761142647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8457096 + ... + 8457185.

It is an arithmetic number, because the mean of its divisors is an integer number (109942833).

Almost surely, 2^761142645 is an apocalyptic number.

It is an amenable number.

761142645 is a deficient number, since it is larger than the sum of its proper divisors (558171351).

761142645 is a wasteful number, since it uses less digits than its factorization.

761142645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16914292 (or 16914289 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 761142645 is about 27588.8137657276. The cubic root of 761142645 is about 913.0376470006.

The spelling of 761142645 in words is "seven hundred sixty-one million, one hundred forty-two thousand, six hundred forty-five".