61649882 has 16 divisors (see below), whose sum is σ = 109330560. Its totient is φ = 25510128.

The previous prime is 61649879. The next prime is 61649891. The reversal of 61649882 is 28894616.

It is a happy number.

It is a super-2 number, since 2×61649882² = 7601415901227848, which contains 22 as substring.

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, 75518 + ... + 76329.

It is an arithmetic number, because the mean of its divisors is an integer number (6833160).

Almost surely, 2^61649882 is an apocalyptic number.

61649882 is a deficient number, since it is larger than the sum of its proper divisors (47680678).

61649882 is a wasteful number, since it uses less digits than its factorization.

61649882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151885.

The product of its digits is 165888, while the sum is 44.

The square root of 61649882 is about 7851.7438827308. The cubic root of 61649882 is about 395.0427385257.

The spelling of 61649882 in words is "sixty-one million, six hundred forty-nine thousand, eight hundred eighty-two".