672249069 has 6 divisors (see below), whose sum is σ = 971026446. Its totient is φ = 448166040.

The previous prime is 672249049. The next prime is 672249073. The reversal of 672249069 is 960942276.

It can be written as a sum of positive squares in only one way, i.e., 608855625 + 63393444 = 24675^2 + 7962^2 .

It is not a de Polignac number, because 672249069 - 2¹¹ = 672247021 is a prime.

It is a super-2 number, since 2×672249069² = 903837621542733522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672249049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37347162 + ... + 37347179.

It is an arithmetic number, because the mean of its divisors is an integer number (161837741).

Almost surely, 2^672249069 is an apocalyptic number.

It is an amenable number.

672249069 is a deficient number, since it is larger than the sum of its proper divisors (298777377).

672249069 is a wasteful number, since it uses less digits than its factorization.

672249069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74694347 (or 74694344 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 672249069 is about 25927.7663712091. The cubic root of 672249069 is about 876.0120291399.

The spelling of 672249069 in words is "six hundred seventy-two million, two hundred forty-nine thousand, sixty-nine".