80090621 has 24 divisors (see below), whose sum is σ = 93536424. Its totient is φ = 68290560.

The previous prime is 80090617. The next prime is 80090653. The reversal of 80090621 is 12609008.

It can be written as a sum of positive squares in 12 ways, for example, as 35868121 + 44222500 = 5989^2 + 6650^2 .

It is not a de Polignac number, because 80090621 - 2² = 80090617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80090221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175025 + ... + 175481.

It is an arithmetic number, because the mean of its divisors is an integer number (3897351).

Almost surely, 2^80090621 is an apocalyptic number.

It is an amenable number.

80090621 is a deficient number, since it is larger than the sum of its proper divisors (13445803).

80090621 is a wasteful number, since it uses less digits than its factorization.

80090621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 80090621 is about 8949.3363441095. The cubic root of 80090621 is about 431.0495741342.

Adding to 80090621 its reverse (12609008), we get a palindrome (92699629).

The spelling of 80090621 in words is "eighty million, ninety thousand, six hundred twenty-one".