612688161 has 8 divisors (see below), whose sum is σ = 817062624. Its totient is φ = 408386240.

The previous prime is 612688159. The next prime is 612688163. The reversal of 612688161 is 161886216.

It is an interprime number because it is at equal distance from previous prime (612688159) and next prime (612688163).

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

It is a cyclic number.

It is not a de Polignac number, because 612688161 - 2¹ = 612688159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (612688163) 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, 6265 + ... + 35561.

It is an arithmetic number, because the mean of its divisors is an integer number (102132828).

Almost surely, 2^612688161 is an apocalyptic number.

It is an amenable number.

612688161 is a deficient number, since it is larger than the sum of its proper divisors (204374463).

612688161 is a wasteful number, since it uses less digits than its factorization.

612688161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36271.

The product of its digits is 27648, while the sum is 39.

The square root of 612688161 is about 24752.5384758816. The cubic root of 612688161 is about 849.3365808412.

The spelling of 612688161 in words is "six hundred twelve million, six hundred eighty-eight thousand, one hundred sixty-one".