61449912 has 48 divisors (see below), whose sum is σ = 166809240. Its totient is φ = 20436288.

The previous prime is 61449907. The next prime is 61449919. The reversal of 61449912 is 21994416.

It is a happy number.

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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61449919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46363 + ... + 47669.

Almost surely, 2^61449912 is an apocalyptic number.

It is an amenable number.

61449912 is an abundant number, since it is smaller than the sum of its proper divisors (105359328).

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

61449912 is a wasteful number, since it uses less digits than its factorization.

61449912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972 (or 1965 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 61449912 is about 7838.9994259472. Note that the first 3 decimals coincide. The cubic root of 61449912 is about 394.6151504516.

The spelling of 61449912 in words is "sixty-one million, four hundred forty-nine thousand, nine hundred twelve".