673376661 has 36 divisors (see below), whose sum is σ = 1019244096. Its totient is φ = 428197440.

The previous prime is 673376651. The next prime is 673376719. The reversal of 673376661 is 166673376.

It is not a de Polignac number, because 673376661 - 2⁶ = 673376597 is a prime.

It is a super-2 number, since 2×673376661² = 906872255159017842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673376651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 710590 + ... + 711536.

It is an arithmetic number, because the mean of its divisors is an integer number (28312336).

Almost surely, 2^673376661 is an apocalyptic number.

It is an amenable number.

673376661 is a deficient number, since it is larger than the sum of its proper divisors (345867435).

673376661 is a wasteful number, since it uses less digits than its factorization.

673376661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1038 counting only the distinct ones).

The product of its digits is 571536, while the sum is 45.

The square root of 673376661 is about 25949.5021339524. The cubic root of 673376661 is about 876.5015463101.

The spelling of 673376661 in words is "six hundred seventy-three million, three hundred seventy-six thousand, six hundred sixty-one".