61615898 has 8 divisors (see below), whose sum is σ = 97288320. Its totient is φ = 29186460.

The previous prime is 61615889. The next prime is 61615909. The reversal of 61615898 is 89851616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810698 + ... + 810773.

It is an arithmetic number, because the mean of its divisors is an integer number (12161040).

Almost surely, 2^61615898 is an apocalyptic number.

61615898 is a deficient number, since it is larger than the sum of its proper divisors (35672422).

61615898 is a wasteful number, since it uses less digits than its factorization.

61615898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621492.

The product of its digits is 103680, while the sum is 44.

The square root of 61615898 is about 7849.5794791823. The cubic root of 61615898 is about 394.9701371431.

The spelling of 61615898 in words is "sixty-one million, six hundred fifteen thousand, eight hundred ninety-eight".