720466531 has 2 divisors, whose sum is σ = 720466532. Its totient is φ = 720466530.

The previous prime is 720466501. The next prime is 720466561. The reversal of 720466531 is 135664027.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (720466501) and next prime (720466561).

It is a cyclic number.

It is not a de Polignac number, because 720466531 - 2⁵ = 720466499 is a prime.

It is a super-2 number, since 2×720466531² = 1038144044582347922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (720466501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360233265 + 360233266.

It is an arithmetic number, because the mean of its divisors is an integer number (360233266).

Almost surely, 2^720466531 is an apocalyptic number.

720466531 is a deficient number, since it is larger than the sum of its proper divisors (1).

720466531 is an equidigital number, since it uses as much as digits as its factorization.

720466531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 720466531 is about 26841.5076141412. The cubic root of 720466531 is about 896.4744921664.

The spelling of 720466531 in words is "seven hundred twenty million, four hundred sixty-six thousand, five hundred thirty-one".