672951229 has 4 divisors (see below), whose sum is σ = 685648476. Its totient is φ = 660253984.

The previous prime is 672951211. The next prime is 672951233. The reversal of 672951229 is 922159276.

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

It can be written as a sum of positive squares in 2 ways, for example, as 599025625 + 73925604 = 24475^2 + 8598^2 .

It is a cyclic number.

It is not a de Polignac number, because 672951229 - 2⁵ = 672951197 is a prime.

It is a super-2 number, since 2×672951229² = 905726713225220882, 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 (672951259) 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, 6348544 + ... + 6348649.

It is an arithmetic number, because the mean of its divisors is an integer number (171412119).

Almost surely, 2^672951229 is an apocalyptic number.

It is an amenable number.

672951229 is a deficient number, since it is larger than the sum of its proper divisors (12697247).

672951229 is a wasteful number, since it uses less digits than its factorization.

672951229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12697246.

The product of its digits is 136080, while the sum is 43.

The square root of 672951229 is about 25941.3035331689. The cubic root of 672951229 is about 876.3169193969.

The spelling of 672951229 in words is "six hundred seventy-two million, nine hundred fifty-one thousand, two hundred twenty-nine".