161624410 has 8 divisors (see below), whose sum is σ = 290923956. Its totient is φ = 64649760.

The previous prime is 161624387. The next prime is 161624429. The reversal of 161624410 is 14426161.

It can be written as a sum of positive squares in 2 ways, for example, as 159542161 + 2082249 = 12631^2 + 1443^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161624410² = 52244899815696200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8081211 + ... + 8081230.

Almost surely, 2^161624410 is an apocalyptic number.

161624410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161624410 is a deficient number, since it is larger than the sum of its proper divisors (129299546).

161624410 is a wasteful number, since it uses less digits than its factorization.

161624410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16162448.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 161624410 is about 12713.1589308087. The cubic root of 161624410 is about 544.7145602898.

The spelling of 161624410 in words is "one hundred sixty-one million, six hundred twenty-four thousand, four hundred ten".