612159887 has 2 divisors, whose sum is σ = 612159888. Its totient is φ = 612159886.

The previous prime is 612159859. The next prime is 612159893. The reversal of 612159887 is 788951216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 612159887 - 2¹⁸ = 611897743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612159287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306079943 + 306079944.

It is an arithmetic number, because the mean of its divisors is an integer number (306079944).

Almost surely, 2^612159887 is an apocalyptic number.

612159887 is a deficient number, since it is larger than the sum of its proper divisors (1).

612159887 is an equidigital number, since it uses as much as digits as its factorization.

612159887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 47.

The square root of 612159887 is about 24741.8650671286. The cubic root of 612159887 is about 849.0924047235.

The spelling of 612159887 in words is "six hundred twelve million, one hundred fifty-nine thousand, eight hundred eighty-seven".