61651914 has 16 divisors (see below), whose sum is σ = 128665152. Its totient is φ = 19657088.

The previous prime is 61651913. The next prime is 61651951. The reversal of 61651914 is 41915616.

It is not an unprimeable number, because it can be changed into a prime (61651913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223239 + ... + 223514.

It is an arithmetic number, because the mean of its divisors is an integer number (8041572).

Almost surely, 2^61651914 is an apocalyptic number.

61651914 is an abundant number, since it is smaller than the sum of its proper divisors (67013238).

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

61651914 is a wasteful number, since it uses less digits than its factorization.

61651914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446781.

The product of its digits is 6480, while the sum is 33.

The square root of 61651914 is about 7851.8732796703. The cubic root of 61651914 is about 395.0470787234.

The spelling of 61651914 in words is "sixty-one million, six hundred fifty-one thousand, nine hundred fourteen".