670531087 has 2 divisors, whose sum is σ = 670531088. Its totient is φ = 670531086.

The previous prime is 670531079. The next prime is 670531111. The reversal of 670531087 is 780135076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670531087 - 2³ = 670531079 is a prime.

It is a super-2 number, since 2×670531087² = 899223877266803138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670534087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335265543 + 335265544.

It is an arithmetic number, because the mean of its divisors is an integer number (335265544).

Almost surely, 2^670531087 is an apocalyptic number.

670531087 is a deficient number, since it is larger than the sum of its proper divisors (1).

670531087 is an equidigital number, since it uses as much as digits as its factorization.

670531087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 670531087 is about 25894.6150193433. The cubic root of 670531087 is about 875.2651547974.

The spelling of 670531087 in words is "six hundred seventy million, five hundred thirty-one thousand, eighty-seven".