615896161 has 4 divisors (see below), whose sum is σ = 617151024. Its totient is φ = 614641300.

The previous prime is 615896063. The next prime is 615896201. The reversal of 615896161 is 161698516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 615896161 - 2¹³ = 615887969 is a prime.

It is a super-2 number, since 2×615896161² = 758656162269075842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (615896861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626695 + ... + 627676.

It is an arithmetic number, because the mean of its divisors is an integer number (154287756).

Almost surely, 2^615896161 is an apocalyptic number.

It is an amenable number.

615896161 is a deficient number, since it is larger than the sum of its proper divisors (1254863).

615896161 is a wasteful number, since it uses less digits than its factorization.

615896161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254862.

The product of its digits is 77760, while the sum is 43.

The square root of 615896161 is about 24817.2553075476. The cubic root of 615896161 is about 850.8163603337.

The spelling of 615896161 in words is "six hundred fifteen million, eight hundred ninety-six thousand, one hundred sixty-one".