672239527 has 4 divisors (see below), whose sum is σ = 673530336. Its totient is φ = 670948720.

The previous prime is 672239509. The next prime is 672239531. The reversal of 672239527 is 725932276.

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 672239527 - 2¹¹ = 672237479 is a prime.

It is a super-2 number, since 2×672239527² = 903811963322367458, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672239927) 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, 644623 + ... + 645664.

It is an arithmetic number, because the mean of its divisors is an integer number (168382584).

Almost surely, 2^672239527 is an apocalyptic number.

672239527 is a deficient number, since it is larger than the sum of its proper divisors (1290809).

672239527 is a wasteful number, since it uses less digits than its factorization.

672239527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290808.

The product of its digits is 317520, while the sum is 43.

The square root of 672239527 is about 25927.5823593331. The cubic root of 672239527 is about 876.0078843733.

The spelling of 672239527 in words is "six hundred seventy-two million, two hundred thirty-nine thousand, five hundred twenty-seven".