61089704 has 64 divisors (see below), whose sum is σ = 132224400. Its totient is φ = 26210304.

The previous prime is 61089703. The next prime is 61089709. The reversal of 61089704 is 40798016.

It can be written as a sum of positive squares in 8 ways, for example, as 17556100 + 43533604 = 4190^2 + 6598^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (61089703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192554 + ... + 192870.

Almost surely, 2^61089704 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 61089704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66112200).

61089704 is an abundant number, since it is smaller than the sum of its proper divisors (71134696).

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

61089704 is a wasteful number, since it uses less digits than its factorization.

61089704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 61089704 is about 7815.9902763501. The cubic root of 61089704 is about 393.8425852995.

The spelling of 61089704 in words is "sixty-one million, eighty-nine thousand, seven hundred four".