61494774 has 16 divisors (see below), whose sum is σ = 134170560. Its totient is φ = 18634760.

The previous prime is 61494767. The next prime is 61494809. The reversal of 61494774 is 47749416.

It is a super-2 number, since 2×61494774² = 7563214458622152, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465804 + ... + 465935.

It is an arithmetic number, because the mean of its divisors is an integer number (8385660).

Almost surely, 2^61494774 is an apocalyptic number.

61494774 is an abundant number, since it is smaller than the sum of its proper divisors (72675786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61494774 is a wasteful number, since it uses less digits than its factorization.

61494774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931755.

The product of its digits is 169344, while the sum is 42.

The square root of 61494774 is about 7841.8603660101. The cubic root of 61494774 is about 394.7111577412.

The spelling of 61494774 in words is "sixty-one million, four hundred ninety-four thousand, seven hundred seventy-four".