61448616 has 48 divisors (see below), whose sum is σ = 166795200. Its totient is φ = 20437152.

The previous prime is 61448587. The next prime is 61448623. The reversal of 61448616 is 61684416.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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, 51175 + ... + 52361.

It is an arithmetic number, because the mean of its divisors is an integer number (3474900).

Almost surely, 2^61448616 is an apocalyptic number.

It is an amenable number.

61448616 is an abundant number, since it is smaller than the sum of its proper divisors (105346584).

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

61448616 is a wasteful number, since it uses less digits than its factorization.

61448616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918 (or 1911 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 61448616 is about 7838.9167619002. The cubic root of 61448616 is about 394.6123762419.

The spelling of 61448616 in words is "sixty-one million, four hundred forty-eight thousand, six hundred sixteen".