61378496 has 28 divisors (see below), whose sum is σ = 123066048. Its totient is φ = 30369792.

The previous prime is 61378469. The next prime is 61378507. The reversal of 61378496 is 69487316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1265 + ... + 11151.

It is an arithmetic number, because the mean of its divisors is an integer number (4395216).

Almost surely, 2^61378496 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 61378496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61533024).

61378496 is an abundant number, since it is smaller than the sum of its proper divisors (61687552).

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

61378496 is an equidigital number, since it uses as much as digits as its factorization.

61378496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996 (or 9986 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 61378496 is about 7834.4429285049. The cubic root of 61378496 is about 394.4622196109.

The spelling of 61378496 in words is "sixty-one million, three hundred seventy-eight thousand, four hundred ninety-six".