672407819 has 4 divisors (see below), whose sum is σ = 683430960. Its totient is φ = 661384680.

The previous prime is 672407809. The next prime is 672407839. The reversal of 672407819 is 918704276.

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 672407819 - 2¹² = 672403723 is a prime.

It is a super-2 number, since 2×672407819² = 904264550104673522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672407819.

It is not an unprimeable number, because it can be changed into a prime (672407809) 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, 5511479 + ... + 5511600.

It is an arithmetic number, because the mean of its divisors is an integer number (170857740).

Almost surely, 2^672407819 is an apocalyptic number.

672407819 is a deficient number, since it is larger than the sum of its proper divisors (11023141).

672407819 is a wasteful number, since it uses less digits than its factorization.

672407819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11023140.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 672407819 is about 25930.8275803145. The cubic root of 672407819 is about 876.0809797569.

The spelling of 672407819 in words is "six hundred seventy-two million, four hundred seven thousand, eight hundred nineteen".