61097916 has 24 divisors (see below), whose sum is σ = 155522304. Its totient is φ = 18514480.

The previous prime is 61097899. The next prime is 61097921. The reversal of 61097916 is 61979016.

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, 231300 + ... + 231563.

It is an arithmetic number, because the mean of its divisors is an integer number (6480096).

Almost surely, 2^61097916 is an apocalyptic number.

61097916 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61097916 is an abundant number, since it is smaller than the sum of its proper divisors (94424388).

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

61097916 is a wasteful number, since it uses less digits than its factorization.

61097916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462881 (or 462879 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 61097916 is about 7816.5155920013. The cubic root of 61097916 is about 393.8602319742.

The spelling of 61097916 in words is "sixty-one million, ninety-seven thousand, nine hundred sixteen".