674623531 has 2 divisors, whose sum is σ = 674623532. Its totient is φ = 674623530.

The previous prime is 674623513. The next prime is 674623559. The reversal of 674623531 is 135326476.

Together with previous prime (674623513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-674623531 is a prime.

It is a super-2 number, since 2×674623531² = 910233817157815922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (674623561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337311765 + 337311766.

It is an arithmetic number, because the mean of its divisors is an integer number (337311766).

Almost surely, 2^674623531 is an apocalyptic number.

674623531 is a deficient number, since it is larger than the sum of its proper divisors (1).

674623531 is an equidigital number, since it uses as much as digits as its factorization.

674623531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 37.

The square root of 674623531 is about 25973.5159537557. The cubic root of 674623531 is about 877.0422093530.

The spelling of 674623531 in words is "six hundred seventy-four million, six hundred twenty-three thousand, five hundred thirty-one".