90657401 has 4 divisors (see below), whose sum is σ = 92367972. Its totient is φ = 88946832.

The previous prime is 90657397. The next prime is 90657403. The reversal of 90657401 is 10475609.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47623801 + 43033600 = 6901^2 + 6560^2 .

It is a cyclic number.

It is not a de Polignac number, because 90657401 - 2² = 90657397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (90657403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855206 + ... + 855311.

It is an arithmetic number, because the mean of its divisors is an integer number (23091993).

Almost surely, 2^90657401 is an apocalyptic number.

It is an amenable number.

90657401 is a deficient number, since it is larger than the sum of its proper divisors (1710571).

90657401 is a wasteful number, since it uses less digits than its factorization.

90657401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710570.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 90657401 is about 9521.4180141405. The cubic root of 90657401 is about 449.2289693815.

The spelling of 90657401 in words is "ninety million, six hundred fifty-seven thousand, four hundred one".