1672720814 has 16 divisors (see below), whose sum is σ = 2665344528. Its totient is φ = 784593792.

The previous prime is 1672720813. The next prime is 1672720849. The reversal of 1672720814 is 4180272761.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672720813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69689 + ... + 90564.

It is an arithmetic number, because the mean of its divisors is an integer number (166584033).

Almost surely, 2^1672720814 is an apocalyptic number.

1672720814 is a deficient number, since it is larger than the sum of its proper divisors (992623714).

1672720814 is a wasteful number, since it uses less digits than its factorization.

1672720814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160579.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 1672720814 is about 40898.9096920688. The cubic root of 1672720814 is about 1187.0649638072.

The spelling of 1672720814 in words is "one billion, six hundred seventy-two million, seven hundred twenty thousand, eight hundred fourteen".