1676691864 has 24 divisors (see below), whose sum is σ = 4541040660. Its totient is φ = 558897264.

The previous prime is 1676691799. The next prime is 1676691893. The reversal of 1676691864 is 4681966761.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1676691864² = 5622591213607588992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1676691864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11643622 + ... + 11643765.

Almost surely, 2^1676691864 is an apocalyptic number.

It is an amenable number.

1676691864 is an abundant number, since it is smaller than the sum of its proper divisors (2864348796).

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

1676691864 is a wasteful number, since it uses less digits than its factorization.

1676691864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23287399 (or 23287392 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 1676691864 is about 40947.4280510999. The cubic root of 1676691864 is about 1188.0035880584.

The spelling of 1676691864 in words is "one billion, six hundred seventy-six million, six hundred ninety-one thousand, eight hundred sixty-four".