1676640693 has 96 divisors (see below), whose sum is σ = 3000224640. Its totient is φ = 823011840.

The previous prime is 1676640689. The next prime is 1676640697. The reversal of 1676640693 is 3960466761.

It is an interprime number because it is at equal distance from previous prime (1676640689) and next prime (1676640697).

It is not a de Polignac number, because 1676640693 - 2² = 1676640689 is a prime.

It is a super-2 number, since 2×1676640693² = 5622248026847040498, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1676640697) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2214471 + ... + 2215227.

It is an arithmetic number, because the mean of its divisors is an integer number (31252340).

Almost surely, 2^1676640693 is an apocalyptic number.

1676640693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1676640693 is a deficient number, since it is larger than the sum of its proper divisors (1323583947).

1676640693 is a wasteful number, since it uses less digits than its factorization.

1676640693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 48.

The square root of 1676640693 is about 40946.8032085534. The cubic root of 1676640693 is about 1187.9915023653.

The spelling of 1676640693 in words is "one billion, six hundred seventy-six million, six hundred forty thousand, six hundred ninety-three".