670401399 has 16 divisors (see below), whose sum is σ = 912384000. Its totient is φ = 437707296.

The previous prime is 670401367. The next prime is 670401419. The reversal of 670401399 is 993104076.

It is not a de Polignac number, because 670401399 - 2⁵ = 670401367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670401299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91722 + ... + 98760.

It is an arithmetic number, because the mean of its divisors is an integer number (57024000).

Almost surely, 2^670401399 is an apocalyptic number.

670401399 is a deficient number, since it is larger than the sum of its proper divisors (241982601).

670401399 is a wasteful number, since it uses less digits than its factorization.

670401399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 670401399 is about 25892.1107482569. The cubic root of 670401399 is about 875.2087225611.

The spelling of 670401399 in words is "six hundred seventy million, four hundred one thousand, three hundred ninety-nine".