90646001 has 4 divisors (see below), whose sum is σ = 91448292. Its totient is φ = 89843712.

The previous prime is 90645949. The next prime is 90646009. The reversal of 90646001 is 10064609.

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 17098225 + 73547776 = 4135^2 + 8576^2 .

It is a cyclic number.

It is not a de Polignac number, because 90646001 - 2¹⁸ = 90383857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90646009) 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, 400976 + ... + 401201.

It is an arithmetic number, because the mean of its divisors is an integer number (22862073).

Almost surely, 2^90646001 is an apocalyptic number.

It is an amenable number.

90646001 is a deficient number, since it is larger than the sum of its proper divisors (802291).

90646001 is a wasteful number, since it uses less digits than its factorization.

90646001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802290.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90646001 is about 9520.8193449934. The cubic root of 90646001 is about 449.2101386890.

The spelling of 90646001 in words is "ninety million, six hundred forty-six thousand, one".