90662401 has 2 divisors, whose sum is σ = 90662402. Its totient is φ = 90662400.

The previous prime is 90662387. The next prime is 90662417. The reversal of 90662401 is 10426609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76108176 + 14554225 = 8724^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 90662401 - 2¹⁵ = 90629633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90662401.

It is not a weakly prime, because it can be changed into another prime (90662441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45331200 + 45331201.

It is an arithmetic number, because the mean of its divisors is an integer number (45331201).

Almost surely, 2^90662401 is an apocalyptic number.

It is an amenable number.

90662401 is a deficient number, since it is larger than the sum of its proper divisors (1).

90662401 is an equidigital number, since it uses as much as digits as its factorization.

90662401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 90662401 is about 9521.6805764529. The cubic root of 90662401 is about 449.2372279592.

The spelling of 90662401 in words is "ninety million, six hundred sixty-two thousand, four hundred one".