90864101 has 4 divisors (see below), whose sum is σ = 92578572. Its totient is φ = 89149632.

The previous prime is 90864073. The next prime is 90864121. The reversal of 90864101 is 10146809.

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 52548001 + 38316100 = 7249^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 90864101 - 2¹⁴ = 90847717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90864121) 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, 857156 + ... + 857261.

It is an arithmetic number, because the mean of its divisors is an integer number (23144643).

Almost surely, 2^90864101 is an apocalyptic number.

It is an amenable number.

90864101 is a deficient number, since it is larger than the sum of its proper divisors (1714471).

90864101 is a wasteful number, since it uses less digits than its factorization.

90864101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714470.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 90864101 is about 9532.2663097503. The cubic root of 90864101 is about 449.5701261084.

The spelling of 90864101 in words is "ninety million, eight hundred sixty-four thousand, one hundred one".