61072704 has 392 divisors, whose sum is σ = 239865408. Its totient is φ = 14929920.

The previous prime is 61072703. The next prime is 61072733. The reversal of 61072704 is 40727016.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61072703) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3592504 + ... + 3592520.

Almost surely, 2^61072704 is an apocalyptic number.

61072704 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 61072704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119932704).

61072704 is an abundant number, since it is smaller than the sum of its proper divisors (178792704).

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

61072704 is a wasteful number, since it uses less digits than its factorization.

61072704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 61072704 is about 7814.9026865342. The cubic root of 61072704 is about 393.8060491640.

It can be divided in two parts, 61072 and 704, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61072704 in words is "sixty-one million, seventy-two thousand, seven hundred four".