864159746 has 4 divisors (see below), whose sum is σ = 1296239622. Its totient is φ = 432079872.

The previous prime is 864159743. The next prime is 864159757. The reversal of 864159746 is 647951468.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 634485721 + 229674025 = 25189^2 + 15155^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 864159694 and 864159703.

It is not an unprimeable number, because it can be changed into a prime (864159743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216039935 + ... + 216039938.

Almost surely, 2^864159746 is an apocalyptic number.

864159746 is a deficient number, since it is larger than the sum of its proper divisors (432079876).

864159746 is a wasteful number, since it uses less digits than its factorization.

864159746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432079875.

The product of its digits is 1451520, while the sum is 50.

The square root of 864159746 is about 29396.5941224489. The cubic root of 864159746 is about 952.4993268619.

The spelling of 864159746 in words is "eight hundred sixty-four million, one hundred fifty-nine thousand, seven hundred forty-six".