864941616 has 120 divisors (see below), whose sum is σ = 3017973504. Its totient is φ = 224657280.

The previous prime is 864941599. The next prime is 864941621. The reversal of 864941616 is 616149468.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27916 + ... + 50091.

Almost surely, 2^864941616 is an apocalyptic number.

It is an amenable number.

864941616 is an abundant number, since it is smaller than the sum of its proper divisors (2153031888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864941616 is a wasteful number, since it uses less digits than its factorization.

864941616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78039 (or 78030 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 864941616 is about 29409.8897651793. The cubic root of 864941616 is about 952.7865060786.

It can be divided in two parts, 8649 and 41616, that multiplied together give a square (359936784 = 18972²).

The spelling of 864941616 in words is "eight hundred sixty-four million, nine hundred forty-one thousand, six hundred sixteen".