236690413 has 2 divisors, whose sum is σ = 236690414. Its totient is φ = 236690412.

The previous prime is 236690351. The next prime is 236690423. The reversal of 236690413 is 314096632.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214241769 + 22448644 = 14637^2 + 4738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236690413 is a prime.

It is a super-2 number, since 2×236690413² = 112044703212221138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236690423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118345206 + 118345207.

It is an arithmetic number, because the mean of its divisors is an integer number (118345207).

Almost surely, 2^236690413 is an apocalyptic number.

It is an amenable number.

236690413 is a deficient number, since it is larger than the sum of its proper divisors (1).

236690413 is an equidigital number, since it uses as much as digits as its factorization.

236690413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 236690413 is about 15384.7461142523. The cubic root of 236690413 is about 618.5766978109.

The spelling of 236690413 in words is "two hundred thirty-six million, six hundred ninety thousand, four hundred thirteen".