61164274 has 4 divisors (see below), whose sum is σ = 91746414. Its totient is φ = 30582136.

The previous prime is 61164239. The next prime is 61164289. The reversal of 61164274 is 47246116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40233649 + 20930625 = 6343^2 + 4575^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15291067 + ... + 15291070.

Almost surely, 2^61164274 is an apocalyptic number.

61164274 is a deficient number, since it is larger than the sum of its proper divisors (30582140).

61164274 is a wasteful number, since it uses less digits than its factorization.

61164274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30582139.

The product of its digits is 8064, while the sum is 31.

The square root of 61164274 is about 7820.7591703108. The cubic root of 61164274 is about 394.0027699566.

The spelling of 61164274 in words is "sixty-one million, one hundred sixty-four thousand, two hundred seventy-four".