90742601 has 2 divisors, whose sum is σ = 90742602. Its totient is φ = 90742600.

The previous prime is 90742591. The next prime is 90742621. The reversal of 90742601 is 10624709.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78499600 + 12243001 = 8860^2 + 3499^2 .

It is an emirp because it is prime and its reverse (10624709) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90742601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90742621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45371300 + 45371301.

It is an arithmetic number, because the mean of its divisors is an integer number (45371301).

Almost surely, 2^90742601 is an apocalyptic number.

It is an amenable number.

90742601 is a deficient number, since it is larger than the sum of its proper divisors (1).

90742601 is an equidigital number, since it uses as much as digits as its factorization.

90742601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90742601 is about 9525.8910869272. The cubic root of 90742601 is about 449.3696540689.

The spelling of 90742601 in words is "ninety million, seven hundred forty-two thousand, six hundred one".