90132621 has 8 divisors (see below), whose sum is σ = 121970784. Its totient is φ = 59191440.

The previous prime is 90132613. The next prime is 90132641. The reversal of 90132621 is 12623109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90132621 - 2³ = 90132613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90132591 and 90132600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90132611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224010 + ... + 224411.

It is an arithmetic number, because the mean of its divisors is an integer number (15246348).

Almost surely, 2^90132621 is an apocalyptic number.

It is an amenable number.

90132621 is a deficient number, since it is larger than the sum of its proper divisors (31838163).

90132621 is a wasteful number, since it uses less digits than its factorization.

90132621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448491.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 90132621 is about 9493.8201478646. The cubic root of 90132621 is about 448.3604882447.

The spelling of 90132621 in words is "ninety million, one hundred thirty-two thousand, six hundred twenty-one".