672641705 has 8 divisors (see below), whose sum is σ = 849652800. Its totient is φ = 509791536.

The previous prime is 672641681. The next prime is 672641729. The reversal of 672641705 is 507146276.

It is an interprime number because it is at equal distance from previous prime (672641681) and next prime (672641729).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 672641705 - 2²² = 668447401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3540125 + ... + 3540314.

It is an arithmetic number, because the mean of its divisors is an integer number (106206600).

Almost surely, 2^672641705 is an apocalyptic number.

It is an amenable number.

672641705 is a deficient number, since it is larger than the sum of its proper divisors (177011095).

672641705 is a wasteful number, since it uses less digits than its factorization.

672641705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080463.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 672641705 is about 25935.3369941476. The cubic root of 672641705 is about 876.1825447682.

The spelling of 672641705 in words is "six hundred seventy-two million, six hundred forty-one thousand, seven hundred five".