90961704 has 72 divisors (see below), whose sum is σ = 255964410. Its totient is φ = 30303072.

The previous prime is 90961697. The next prime is 90961709. The reversal of 90961704 is 40716909.

It can be written as a sum of positive squares in only one way, i.e., 79388100 + 11573604 = 8910^2 + 3402^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (90961709) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 51622 + ... + 53354.

Almost surely, 2^90961704 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 90961704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127982205).

90961704 is an abundant number, since it is smaller than the sum of its proper divisors (165002706).

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

90961704 is an equidigital number, since it uses as much as digits as its factorization.

90961704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763 (or 1738 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 90961704 is about 9537.3845471387. The cubic root of 90961704 is about 449.7310392768.

The spelling of 90961704 in words is "ninety million, nine hundred sixty-one thousand, seven hundred four".