1676644407 has 16 divisors (see below), whose sum is σ = 2484614880. Its totient is φ = 1117449216.

The previous prime is 1676644391. The next prime is 1676644423. The reversal of 1676644407 is 7044466761.

It is an interprime number because it is at equal distance from previous prime (1676644391) and next prime (1676644423).

It is not a de Polignac number, because 1676644407 - 2⁴ = 1676644391 is a prime.

It is a super-2 number, since 2×1676644407² = 5622272935048763298, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1676644427) 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, 128593 + ... + 141029.

It is an arithmetic number, because the mean of its divisors is an integer number (155288430).

Almost surely, 2^1676644407 is an apocalyptic number.

1676644407 is a deficient number, since it is larger than the sum of its proper divisors (807970473).

1676644407 is a wasteful number, since it uses less digits than its factorization.

1676644407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17439 (or 17433 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 1676644407 is about 40946.8485600540. The cubic root of 1676644407 is about 1187.9923795552.

The spelling of 1676644407 in words is "one billion, six hundred seventy-six million, six hundred forty-four thousand, four hundred seven".