61322464 has 48 divisors (see below), whose sum is σ = 142442496. Its totient is φ = 25430400.

The previous prime is 61322423. The next prime is 61322483. The reversal of 61322464 is 46422316.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 2529 + ... + 11359.

It is an arithmetic number, because the mean of its divisors is an integer number (2967552).

Almost surely, 2^61322464 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 61322464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71221248).

61322464 is an abundant number, since it is smaller than the sum of its proper divisors (81120032).

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

61322464 is a wasteful number, since it uses less digits than its factorization.

61322464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8879 (or 8871 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 61322464 is about 7830.8661079091. The cubic root of 61322464 is about 394.3421491319.

The spelling of 61322464 in words is "sixty-one million, three hundred twenty-two thousand, four hundred sixty-four".