61507874 has 8 divisors (see below), whose sum is σ = 92488620. Its totient is φ = 30678336.

The previous prime is 61507871. The next prime is 61507879. The reversal of 61507874 is 47870516.

It can be written as a sum of positive squares in 2 ways, for example, as 59182249 + 2325625 = 7693^2 + 1525^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (61507871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36779 + ... + 38414.

Almost surely, 2^61507874 is an apocalyptic number.

61507874 is a deficient number, since it is larger than the sum of its proper divisors (30980746).

61507874 is a wasteful number, since it uses less digits than its factorization.

61507874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75604.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 61507874 is about 7842.6955825150. The cubic root of 61507874 is about 394.7391836948.

The spelling of 61507874 in words is "sixty-one million, five hundred seven thousand, eight hundred seventy-four".