670433531 has 2 divisors, whose sum is σ = 670433532. Its totient is φ = 670433530.

The previous prime is 670433527. The next prime is 670433609. The reversal of 670433531 is 135334076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670433531 - 2² = 670433527 is a prime.

It is a super-2 number, since 2×670433531² = 898962238978255922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670432531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335216765 + 335216766.

It is an arithmetic number, because the mean of its divisors is an integer number (335216766).

Almost surely, 2^670433531 is an apocalyptic number.

670433531 is a deficient number, since it is larger than the sum of its proper divisors (1).

670433531 is an equidigital number, since it uses as much as digits as its factorization.

670433531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 32.

The square root of 670433531 is about 25892.7312387087. The cubic root of 670433531 is about 875.2227051082. Note that the first 3 decimals are identical.

The spelling of 670433531 in words is "six hundred seventy million, four hundred thirty-three thousand, five hundred thirty-one".