673644415 has 16 divisors (see below), whose sum is σ = 841856256. Its totient is φ = 516902400.

The previous prime is 673644383. The next prime is 673644443. The reversal of 673644415 is 514446376.

It is not a de Polignac number, because 673644415 - 2⁵ = 673644383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716 + ... + 36745.

It is an arithmetic number, because the mean of its divisors is an integer number (52616016).

Almost surely, 2^673644415 is an apocalyptic number.

673644415 is a deficient number, since it is larger than the sum of its proper divisors (168211841).

673644415 is a wasteful number, since it uses less digits than its factorization.

673644415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38610.

The product of its digits is 241920, while the sum is 40.

The square root of 673644415 is about 25954.6607567889. The cubic root of 673644415 is about 876.6177050216.

The spelling of 673644415 in words is "six hundred seventy-three million, six hundred forty-four thousand, four hundred fifteen".