672701657 has 4 divisors (see below), whose sum is σ = 684103440. Its totient is φ = 661299876.

The previous prime is 672701651. The next prime is 672701681. The reversal of 672701657 is 756107276.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 672701657 - 2¹⁸ = 672439513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672701651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5700803 + ... + 5700920.

It is an arithmetic number, because the mean of its divisors is an integer number (171025860).

Almost surely, 2^672701657 is an apocalyptic number.

It is an amenable number.

672701657 is a deficient number, since it is larger than the sum of its proper divisors (11401783).

672701657 is a wasteful number, since it uses less digits than its factorization.

672701657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11401782.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 672701657 is about 25936.4927659851. The cubic root of 672701657 is about 876.2085751372.

The spelling of 672701657 in words is "six hundred seventy-two million, seven hundred one thousand, six hundred fifty-seven".