672694787 has 4 divisors (see below), whose sum is σ = 673384296. Its totient is φ = 672005280.

The previous prime is 672694741. The next prime is 672694801. The reversal of 672694787 is 787496276.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672694787 - 2⁶ = 672694723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672694387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 343289 + ... + 345242.

It is an arithmetic number, because the mean of its divisors is an integer number (168346074).

Almost surely, 2^672694787 is an apocalyptic number.

672694787 is a deficient number, since it is larger than the sum of its proper divisors (689509).

672694787 is an equidigital number, since it uses as much as digits as its factorization.

672694787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689508.

The product of its digits is 7112448, while the sum is 56.

The square root of 672694787 is about 25936.3603267691. The cubic root of 672694787 is about 876.2055923521.

The spelling of 672694787 in words is "six hundred seventy-two million, six hundred ninety-four thousand, seven hundred eighty-seven".