161617008 has 40 divisors (see below), whose sum is σ = 477155968. Its totient is φ = 46176192.

The previous prime is 161617003. The next prime is 161617013. The reversal of 161617008 is 800716161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161617003) and next prime (161617013).

It is a super-2 number, since 2×161617008² = 52240114549744128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161617003) 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, 240166 + ... + 240837.

Almost surely, 2^161617008 is an apocalyptic number.

It is an amenable number.

161617008 is an abundant number, since it is smaller than the sum of its proper divisors (315538960).

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

161617008 is a wasteful number, since it uses less digits than its factorization.

161617008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481021 (or 481015 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 161617008 is about 12712.8678117882. The cubic root of 161617008 is about 544.7062446344.

The spelling of 161617008 in words is "one hundred sixty-one million, six hundred seventeen thousand, eight".