61694378 has 16 divisors (see below), whose sum is σ = 93480000. Its totient is φ = 30536352.

The previous prime is 61694351. The next prime is 61694383. The reversal of 61694378 is 87349616.

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, 150638 + ... + 151046.

It is an arithmetic number, because the mean of its divisors is an integer number (5842500).

Almost surely, 2^61694378 is an apocalyptic number.

61694378 is a deficient number, since it is larger than the sum of its proper divisors (31785622).

61694378 is a wasteful number, since it uses less digits than its factorization.

61694378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 217728, while the sum is 44.

The square root of 61694378 is about 7854.5768823024. The cubic root of 61694378 is about 395.1377567905.

The spelling of 61694378 in words is "sixty-one million, six hundred ninety-four thousand, three hundred seventy-eight".