163677420 has 36 divisors (see below), whose sum is σ = 496488720. Its totient is φ = 43647264.

The previous prime is 163677391. The next prime is 163677431. The reversal of 163677420 is 24776361.

163677420 is a `hidden beast` number, since 163 + 6 + 77 + 420 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454480 + ... + 454839.

Almost surely, 2^163677420 is an apocalyptic number.

163677420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163677420 is an abundant number, since it is smaller than the sum of its proper divisors (332811300).

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

163677420 is a wasteful number, since it uses less digits than its factorization.

163677420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909334 (or 909329 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 163677420 is about 12793.6476424826. The cubic root of 163677420 is about 547.0112483163.

The spelling of 163677420 in words is "one hundred sixty-three million, six hundred seventy-seven thousand, four hundred twenty".