61898656 has 24 divisors (see below), whose sum is σ = 128278080. Its totient is φ = 29320128.

The previous prime is 61898651. The next prime is 61898689. The reversal of 61898656 is 65689816.

It is a super-2 number, since 2×61898656² = 7662887229212672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61898651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50296 + ... + 51511.

It is an arithmetic number, because the mean of its divisors is an integer number (5344920).

Almost surely, 2^61898656 is an apocalyptic number.

It is an amenable number.

61898656 is an abundant number, since it is smaller than the sum of its proper divisors (66379424).

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

61898656 is a wasteful number, since it uses less digits than its factorization.

61898656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101836 (or 101828 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 61898656 is about 7867.5698916502. The cubic root of 61898656 is about 395.5733935949.

The spelling of 61898656 in words is "sixty-one million, eight hundred ninety-eight thousand, six hundred fifty-six".