61377008 has 90 divisors (see below), whose sum is σ = 152287128. Its totient is φ = 23876160.

The previous prime is 61376989. The next prime is 61377047. The reversal of 61377008 is 80077316.

It is a happy number.

It is a super-2 number, since 2×61377008² = 7534274222064128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 94541 + ... + 95187.

Almost surely, 2^61377008 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 61377008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76143564).

61377008 is an abundant number, since it is smaller than the sum of its proper divisors (90910120).

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

61377008 is a wasteful number, since it uses less digits than its factorization.

61377008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 61377008 is about 7834.3479626578. The cubic root of 61377008 is about 394.4590319335.

The spelling of 61377008 in words is "sixty-one million, three hundred seventy-seven thousand, eight".