83143864 has 8 divisors (see below), whose sum is σ = 155894760. Its totient is φ = 41571928.

The previous prime is 83143843. The next prime is 83143877. The reversal of 83143864 is 46834138.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5196484 + ... + 5196499.

It is an arithmetic number, because the mean of its divisors is an integer number (19486845).

Almost surely, 2^83143864 is an apocalyptic number.

It is an amenable number.

83143864 is a deficient number, since it is larger than the sum of its proper divisors (72750896).

83143864 is a wasteful number, since it uses less digits than its factorization.

83143864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10392989 (or 10392985 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 83143864 is about 9118.3257235087. The cubic root of 83143864 is about 436.4589477515.

The spelling of 83143864 in words is "eighty-three million, one hundred forty-three thousand, eight hundred sixty-four".