130170621 has 8 divisors (see below), whose sum is σ = 198355264. Its totient is φ = 74383200.

The previous prime is 130170617. The next prime is 130170629. The reversal of 130170621 is 126071031.

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

It is not a de Polignac number, because 130170621 - 2² = 130170617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6198601 = 130170621 / (1 + 3 + 0 + 1 + 7 + 0 + 6 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130170629) 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, 3099280 + ... + 3099321.

It is an arithmetic number, because the mean of its divisors is an integer number (24794408).

Almost surely, 2^130170621 is an apocalyptic number.

It is an amenable number.

130170621 is a deficient number, since it is larger than the sum of its proper divisors (68184643).

130170621 is an equidigital number, since it uses as much as digits as its factorization.

130170621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6198611.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 130170621 is about 11409.2340233690. The cubic root of 130170621 is about 506.8012284466.

The spelling of 130170621 in words is "one hundred thirty million, one hundred seventy thousand, six hundred twenty-one".