610161621 has 8 divisors (see below), whose sum is σ = 815315424. Its totient is φ = 405891120.

The previous prime is 610161613. The next prime is 610161647. The reversal of 610161621 is 126161016.

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

It is not a de Polignac number, because 610161621 - 2³ = 610161613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 610161591 and 610161600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610161691) 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, 219211 + ... + 221976.

It is an arithmetic number, because the mean of its divisors is an integer number (101914428).

Almost surely, 2^610161621 is an apocalyptic number.

It is an amenable number.

610161621 is a deficient number, since it is larger than the sum of its proper divisors (205153803).

610161621 is a wasteful number, since it uses less digits than its factorization.

610161621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441651.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 610161621 is about 24701.4497752662. The cubic root of 610161621 is about 848.1675036421.

The spelling of 610161621 in words is "six hundred ten million, one hundred sixty-one thousand, six hundred twenty-one".