61615104 has 88 divisors (see below), whose sum is σ = 169786368. Its totient is φ = 19845120.

The previous prime is 61615093. The next prime is 61615117. The reversal of 61615104 is 40151616.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 94909 + ... + 95555.

Almost surely, 2^61615104 is an apocalyptic number.

61615104 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61615104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84893184).

61615104 is an abundant number, since it is smaller than the sum of its proper divisors (108171264).

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

61615104 is a wasteful number, since it uses less digits than its factorization.

61615104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 683 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 61615104 is about 7849.5289030616. The cubic root of 61615104 is about 394.9684405699.

The spelling of 61615104 in words is "sixty-one million, six hundred fifteen thousand, one hundred four".