61406604 has 72 divisors (see below), whose sum is σ = 181053600. Its totient is φ = 17541216.

The previous prime is 61406599. The next prime is 61406627. The reversal of 61406604 is 40660416.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9862 + ... + 14834.

Almost surely, 2^61406604 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 61406604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90526800).

61406604 is an abundant number, since it is smaller than the sum of its proper divisors (119646996).

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

61406604 is a wasteful number, since it uses less digits than its factorization.

61406604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5004 (or 4985 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 61406604 is about 7836.2365967344. The cubic root of 61406604 is about 394.5224244748.

The spelling of 61406604 in words is "sixty-one million, four hundred six thousand, six hundred four".