61499944 has 24 divisors (see below), whose sum is σ = 126750330. Its totient is φ = 27954080.

The previous prime is 61499891. The next prime is 61499983. The reversal of 61499944 is 44999416.

It can be written as a sum of positive squares in only one way, i.e., 49871844 + 11628100 = 7062^2 + 3410^2 .

It is a super-2 number, since 2×61499944² = 7564486224006272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61499894 and 61499903.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30799 + ... + 32734.

Almost surely, 2^61499944 is an apocalyptic number.

It is an amenable number.

61499944 is an abundant number, since it is smaller than the sum of its proper divisors (65250386).

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

61499944 is a wasteful number, since it uses less digits than its factorization.

61499944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63561 (or 63546 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 61499944 is about 7842.1900002487. The cubic root of 61499944 is about 394.7222188410.

It can be divided in two parts, 61 and 499944, that added together give a palindrome (500005).

The spelling of 61499944 in words is "sixty-one million, four hundred ninety-nine thousand, nine hundred forty-four".