420613867 has 2 divisors, whose sum is σ = 420613868. Its totient is φ = 420613866.

The previous prime is 420613829. The next prime is 420613877. The reversal of 420613867 is 768316024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420613867 is a prime.

It is a super-2 number, since 2×420613867² = 353832050225387378, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420613877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210306933 + 210306934.

It is an arithmetic number, because the mean of its divisors is an integer number (210306934).

Almost surely, 2^420613867 is an apocalyptic number.

420613867 is a deficient number, since it is larger than the sum of its proper divisors (1).

420613867 is an equidigital number, since it uses as much as digits as its factorization.

420613867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 420613867 is about 20508.8728846809. The cubic root of 420613867 is about 749.2519160011.

The spelling of 420613867 in words is "four hundred twenty million, six hundred thirteen thousand, eight hundred sixty-seven".