864896078 has 4 divisors (see below), whose sum is σ = 1297344120. Its totient is φ = 432448038.

The previous prime is 864896077. The next prime is 864896101. The reversal of 864896078 is 870698468.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864896077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216224018 + ... + 216224021.

It is an arithmetic number, because the mean of its divisors is an integer number (324336030).

Almost surely, 2^864896078 is an apocalyptic number.

864896078 is a deficient number, since it is larger than the sum of its proper divisors (432448042).

864896078 is a wasteful number, since it uses less digits than its factorization.

864896078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432448041.

The product of its (nonzero) digits is 4644864, while the sum is 56.

The square root of 864896078 is about 29409.1155596356. The cubic root of 864896078 is about 952.7697848138.

The spelling of 864896078 in words is "eight hundred sixty-four million, eight hundred ninety-six thousand, seventy-eight".