61166651 has 24 divisors (see below), whose sum is σ = 77316624. Its totient is φ = 47960640.

The previous prime is 61166647. The next prime is 61166671. The reversal of 61166651 is 15666116.

It is not a de Polignac number, because 61166651 - 2² = 61166647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61166621) 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, 83081 + ... + 83813.

It is an arithmetic number, because the mean of its divisors is an integer number (3221526).

Almost surely, 2^61166651 is an apocalyptic number.

61166651 is a deficient number, since it is larger than the sum of its proper divisors (16149973).

61166651 is a wasteful number, since it uses less digits than its factorization.

61166651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891 (or 884 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 61166651 is about 7820.9111361784. The cubic root of 61166651 is about 394.0078738753.

The spelling of 61166651 in words is "sixty-one million, one hundred sixty-six thousand, six hundred fifty-one".