672709457 has 4 divisors (see below), whose sum is σ = 768810816. Its totient is φ = 576608100.

The previous prime is 672709447. The next prime is 672709463. The reversal of 672709457 is 754907276.

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 672709457 - 2⁴ = 672709441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672709417) 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, 48050669 + ... + 48050682.

It is an arithmetic number, because the mean of its divisors is an integer number (192202704).

Almost surely, 2^672709457 is an apocalyptic number.

It is an amenable number.

672709457 is a deficient number, since it is larger than the sum of its proper divisors (96101359).

672709457 is an equidigital number, since it uses as much as digits as its factorization.

672709457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96101358.

The product of its (nonzero) digits is 740880, while the sum is 47.

The square root of 672709457 is about 25936.6431328343. The cubic root of 672709457 is about 876.2119616808.

The spelling of 672709457 in words is "six hundred seventy-two million, seven hundred nine thousand, four hundred fifty-seven".