90940651 has 2 divisors, whose sum is σ = 90940652. Its totient is φ = 90940650.

The previous prime is 90940649. The next prime is 90940679. The reversal of 90940651 is 15604909.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90940651 - 2¹ = 90940649 is a prime.

Together with 90940649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (90940621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45470325 + 45470326.

It is an arithmetic number, because the mean of its divisors is an integer number (45470326).

Almost surely, 2^90940651 is an apocalyptic number.

90940651 is a deficient number, since it is larger than the sum of its proper divisors (1).

90940651 is an equidigital number, since it uses as much as digits as its factorization.

90940651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 90940651 is about 9536.2807739705. The cubic root of 90940651 is about 449.6963399923.

The spelling of 90940651 in words is "ninety million, nine hundred forty thousand, six hundred fifty-one".