673983651 has 16 divisors (see below), whose sum is σ = 1022964480. Its totient is φ = 390714720.

The previous prime is 673983631. The next prime is 673983671. The reversal of 673983651 is 156389376.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (673983631) and next prime (673983671).

It is not a de Polignac number, because 673983651 - 2⁶ = 673983587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673983651.

It is not an unprimeable number, because it can be changed into a prime (673983631) 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, 443236 + ... + 444753.

It is an arithmetic number, because the mean of its divisors is an integer number (63935280).

Almost surely, 2^673983651 is an apocalyptic number.

673983651 is a deficient number, since it is larger than the sum of its proper divisors (348980829).

673983651 is a wasteful number, since it uses less digits than its factorization.

673983651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888026.

The product of its digits is 816480, while the sum is 48.

The square root of 673983651 is about 25961.1950996097. The cubic root of 673983651 is about 876.7648303064.

The spelling of 673983651 in words is "six hundred seventy-three million, nine hundred eighty-three thousand, six hundred fifty-one".