90615403 has 2 divisors, whose sum is σ = 90615404. Its totient is φ = 90615402.

The previous prime is 90615391. The next prime is 90615409. The reversal of 90615403 is 30451609.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90615403 - 2²¹ = 88518251 is a prime.

It is a super-2 number, since 2×90615403² = 16422302521704818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90615409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45307701 + 45307702.

It is an arithmetic number, because the mean of its divisors is an integer number (45307702).

Almost surely, 2^90615403 is an apocalyptic number.

90615403 is a deficient number, since it is larger than the sum of its proper divisors (1).

90615403 is an equidigital number, since it uses as much as digits as its factorization.

90615403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 90615403 is about 9519.2123098500. The cubic root of 90615403 is about 449.1595886426.

The spelling of 90615403 in words is "ninety million, six hundred fifteen thousand, four hundred three".