16977680 has 40 divisors (see below), whose sum is σ = 41193792. Its totient is φ = 6495104.

The previous prime is 16977671. The next prime is 16977689. The reversal of 16977680 is 8677961.

It is an interprime number because it is at equal distance from previous prime (16977671) and next prime (16977689).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (16977689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2774 + ... + 6453.

Almost surely, 2^16977680 is an apocalyptic number.

16977680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16977680 is an abundant number, since it is smaller than the sum of its proper divisors (24216112).

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

16977680 is a wasteful number, since it uses less digits than its factorization.

16977680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9263 (or 9257 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 16977680 is about 4120.3980390249. The cubic root of 16977680 is about 257.0155783983.

The spelling of 16977680 in words is "sixteen million, nine hundred seventy-seven thousand, six hundred eighty".