83771664 has 40 divisors (see below), whose sum is σ = 218006880. Its totient is φ = 27717888.

The previous prime is 83771657. The next prime is 83771671. The reversal of 83771664 is 46617738.

It is an interprime number because it is at equal distance from previous prime (83771657) and next prime (83771671).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207 + ... + 12945.

It is an arithmetic number, because the mean of its divisors is an integer number (5450172).

Almost surely, 2^83771664 is an apocalyptic number.

It is an amenable number.

83771664 is an abundant number, since it is smaller than the sum of its proper divisors (134235216).

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

83771664 is a wasteful number, since it uses less digits than its factorization.

83771664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12887 (or 12881 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 83771664 is about 9152.6861630890. The cubic root of 83771664 is about 437.5547277387.

The spelling of 83771664 in words is "eighty-three million, seven hundred seventy-one thousand, six hundred sixty-four".