670775251 has 2 divisors, whose sum is σ = 670775252. Its totient is φ = 670775250.

The previous prime is 670775233. The next prime is 670775263. The reversal of 670775251 is 152577076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670775251 - 2¹³ = 670767059 is a prime.

It is a super-2 number, since 2×670775251² = 899878874708226002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (670775201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335387625 + 335387626.

It is an arithmetic number, because the mean of its divisors is an integer number (335387626).

Almost surely, 2^670775251 is an apocalyptic number.

670775251 is a deficient number, since it is larger than the sum of its proper divisors (1).

670775251 is an equidigital number, since it uses as much as digits as its factorization.

670775251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102900, while the sum is 40.

The square root of 670775251 is about 25899.3291611964. The cubic root of 670775251 is about 875.3713802015.

The spelling of 670775251 in words is "six hundred seventy million, seven hundred seventy-five thousand, two hundred fifty-one".