672345669 has 16 divisors (see below), whose sum is σ = 919683072. Its totient is φ = 436705968.

The previous prime is 672345629. The next prime is 672345673. The reversal of 672345669 is 966543276.

It is not a de Polignac number, because 672345669 - 2⁸ = 672345413 is a prime.

It is a super-2 number, since 2×672345669² = 904097397246115122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672345629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20752 + ... + 42134.

It is an arithmetic number, because the mean of its divisors is an integer number (57480192).

Almost surely, 2^672345669 is an apocalyptic number.

It is an amenable number.

672345669 is a deficient number, since it is larger than the sum of its proper divisors (247337403).

672345669 is a wasteful number, since it uses less digits than its factorization.

672345669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21656.

The product of its digits is 1632960, while the sum is 48.

The square root of 672345669 is about 25929.6291720495. The cubic root of 672345669 is about 876.0539871546.

The spelling of 672345669 in words is "six hundred seventy-two million, three hundred forty-five thousand, six hundred sixty-nine".