90613069 has 2 divisors, whose sum is σ = 90613070. Its totient is φ = 90613068.

The previous prime is 90613049. The next prime is 90613097. The reversal of 90613069 is 96031609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88548100 + 2064969 = 9410^2 + 1437^2 .

It is an emirp because it is prime and its reverse (96031609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90613069 - 2¹¹ = 90611021 is a prime.

It is a super-2 number, since 2×90613069² = 16421456547197522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90613049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45306534 + 45306535.

It is an arithmetic number, because the mean of its divisors is an integer number (45306535).

Almost surely, 2^90613069 is an apocalyptic number.

It is an amenable number.

90613069 is a deficient number, since it is larger than the sum of its proper divisors (1).

90613069 is an equidigital number, since it uses as much as digits as its factorization.

90613069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 90613069 is about 9519.0897148835. The cubic root of 90613069 is about 449.1557322435.

The spelling of 90613069 in words is "ninety million, six hundred thirteen thousand, sixty-nine".