670949401 has 2 divisors, whose sum is σ = 670949402. Its totient is φ = 670949400.

The previous prime is 670949371. The next prime is 670949467. The reversal of 670949401 is 104949076.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 549949401 + 121000000 = 23451^2 + 11000^2 .

It is a cyclic number.

It is not a de Polignac number, because 670949401 - 2⁷ = 670949273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (670949471) 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, 335474700 + 335474701.

It is an arithmetic number, because the mean of its divisors is an integer number (335474701).

Almost surely, 2^670949401 is an apocalyptic number.

It is an amenable number.

670949401 is a deficient number, since it is larger than the sum of its proper divisors (1).

670949401 is an equidigital number, since it uses as much as digits as its factorization.

670949401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 670949401 is about 25902.6909991993. The cubic root of 670949401 is about 875.4471297339.

The spelling of 670949401 in words is "six hundred seventy million, nine hundred forty-nine thousand, four hundred one".