83725866 has 32 divisors (see below), whose sum is σ = 212638080. Its totient is φ = 23921568.

The previous prime is 83725861. The next prime is 83725877. The reversal of 83725866 is 66852738.

It is not an unprimeable number, because it can be changed into a prime (83725861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110371 + ... + 111126.

It is an arithmetic number, because the mean of its divisors is an integer number (6644940).

Almost surely, 2^83725866 is an apocalyptic number.

83725866 is an abundant number, since it is smaller than the sum of its proper divisors (128912214).

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

83725866 is a wasteful number, since it uses less digits than its factorization.

83725866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221515 (or 221509 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 83725866 is about 9150.1839325775. The cubic root of 83725866 is about 437.4749760925.

The spelling of 83725866 in words is "eighty-three million, seven hundred twenty-five thousand, eight hundred sixty-six".