1672656012 has 72 divisors (see below), whose sum is σ = 4281557280. Its totient is φ = 550540800.

The previous prime is 1672655989. The next prime is 1672656017. The reversal of 1672656012 is 2106562761.

It is a happy number.

1672656012 is a `hidden beast` number, since 1 + 67 + 26 + 560 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1672656017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1572993 + ... + 1574055.

Almost surely, 2^1672656012 is an apocalyptic number.

1672656012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1672656012 is an abundant number, since it is smaller than the sum of its proper divisors (2608901268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1672656012 is a wasteful number, since it uses less digits than its factorization.

1672656012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583 (or 1578 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1672656012 is about 40898.1174627879. The cubic root of 1672656012 is about 1187.0496344554.

The spelling of 1672656012 in words is "one billion, six hundred seventy-two million, six hundred fifty-six thousand, twelve".