61616814 has 24 divisors (see below), whose sum is σ = 143354088. Its totient is φ = 17604720.

The previous prime is 61616777. The next prime is 61616831. The reversal of 61616814 is 41861616.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104497 + ... + 105084.

It is an arithmetic number, because the mean of its divisors is an integer number (5973087).

Almost surely, 2^61616814 is an apocalyptic number.

61616814 is an abundant number, since it is smaller than the sum of its proper divisors (81737274).

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

61616814 is a wasteful number, since it uses less digits than its factorization.

61616814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209600 (or 209593 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 61616814 is about 7849.6378260401. The cubic root of 61616814 is about 394.9720943807.

The spelling of 61616814 in words is "sixty-one million, six hundred sixteen thousand, eight hundred fourteen".