670754407 has 2 divisors, whose sum is σ = 670754408. Its totient is φ = 670754406.

The previous prime is 670754401. The next prime is 670754419. The reversal of 670754407 is 704457076.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670754407 - 2¹¹ = 670752359 is a prime.

It is a super-3 number, since 3×670754407³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 670754407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670754401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335377203 + 335377204.

It is an arithmetic number, because the mean of its divisors is an integer number (335377204).

Almost surely, 2^670754407 is an apocalyptic number.

670754407 is a deficient number, since it is larger than the sum of its proper divisors (1).

670754407 is an equidigital number, since it uses as much as digits as its factorization.

670754407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 40.

The square root of 670754407 is about 25898.9267538251. The cubic root of 670754407 is about 875.3623128673.

The spelling of 670754407 in words is "six hundred seventy million, seven hundred fifty-four thousand, four hundred seven".