61130691 has 24 divisors (see below), whose sum is σ = 95494464. Its totient is φ = 37536000.

The previous prime is 61130687. The next prime is 61130717. The reversal of 61130691 is 19603116.

It is not a de Polignac number, because 61130691 - 2² = 61130687 is a prime.

It is a super-2 number, since 2×61130691² = 7473922764274962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61130621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2941 + ... + 11441.

It is an arithmetic number, because the mean of its divisors is an integer number (3978936).

Almost surely, 2^61130691 is an apocalyptic number.

61130691 is a deficient number, since it is larger than the sum of its proper divisors (34363773).

61130691 is a wasteful number, since it uses less digits than its factorization.

61130691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571 (or 8568 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 61130691 is about 7818.6118333116. The cubic root of 61130691 is about 393.9306460592.

The spelling of 61130691 in words is "sixty-one million, one hundred thirty thousand, six hundred ninety-one".