672534577 has 48 divisors (see below), whose sum is σ = 833043904. Its totient is φ = 538876800.

The previous prime is 672534547. The next prime is 672534581. The reversal of 672534577 is 775435276.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-672534577 is a prime.

It is a super-3 number, since 3×672534577³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (672534547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4125898 + ... + 4126060.

Almost surely, 2^672534577 is an apocalyptic number.

It is an amenable number.

672534577 is a deficient number, since it is larger than the sum of its proper divisors (160509327).

672534577 is a wasteful number, since it uses less digits than its factorization.

672534577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 291 counting only the distinct ones).

The product of its digits is 1234800, while the sum is 46.

The square root of 672534577 is about 25933.2716216061. The cubic root of 672534577 is about 876.1360273497.

The spelling of 672534577 in words is "six hundred seventy-two million, five hundred thirty-four thousand, five hundred seventy-seven".