90619679 has 2 divisors, whose sum is σ = 90619680. Its totient is φ = 90619678.

The previous prime is 90619667. The next prime is 90619699. The reversal of 90619679 is 97691609.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90619679 - 2⁴ = 90619663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90619699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45309839 + 45309840.

It is an arithmetic number, because the mean of its divisors is an integer number (45309840).

Almost surely, 2^90619679 is an apocalyptic number.

90619679 is a deficient number, since it is larger than the sum of its proper divisors (1).

90619679 is an equidigital number, since it uses as much as digits as its factorization.

90619679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 90619679 is about 9519.4369056158. The cubic root of 90619679 is about 449.1666535791.

The spelling of 90619679 in words is "ninety million, six hundred nineteen thousand, six hundred seventy-nine".