6677451990 has 48 divisors (see below), whose sum is σ = 18939684816. Its totient is φ = 1618776000.

The previous prime is 6677451953. The next prime is 6677452051. The reversal of 6677451990 is 991547766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3371461 + ... + 3373440.

It is an arithmetic number, because the mean of its divisors is an integer number (394576767).

Almost surely, 2^6677451990 is an apocalyptic number.

6677451990 is an abundant number, since it is smaller than the sum of its proper divisors (12262232826).

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

6677451990 is a wasteful number, since it uses less digits than its factorization.

6677451990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6744925 (or 6744922 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 54.

The square root of 6677451990 is about 81715.6777491321. The cubic root of 6677451990 is about 1883.0864487158.

The spelling of 6677451990 in words is "six billion, six hundred seventy-seven million, four hundred fifty-one thousand, nine hundred ninety".