61276464 has 60 divisors (see below), whose sum is σ = 172509792. Its totient is φ = 20304000.

The previous prime is 61276459. The next prime is 61276487. The reversal of 61276464 is 46467216.

61276464 is a `hidden beast` number, since 6 + 1 + 2 + 7 + 646 + 4 = 666.

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

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, 24889 + ... + 27239.

Almost surely, 2^61276464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61276464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86254896).

61276464 is an abundant number, since it is smaller than the sum of its proper divisors (111233328).

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

61276464 is a wasteful number, since it uses less digits than its factorization.

61276464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546 (or 2537 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 61276464 is about 7827.9284616046. The cubic root of 61276464 is about 394.2435214550.

The spelling of 61276464 in words is "sixty-one million, two hundred seventy-six thousand, four hundred sixty-four".