82645988 has 12 divisors (see below), whose sum is σ = 146668032. Its totient is φ = 40740840.

The previous prime is 82645987. The next prime is 82645999. The reversal of 82645988 is 88954628.

It is a super-4 number, since 4×82645988⁴ (a number of 33 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (82645987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145220 + ... + 145787.

It is an arithmetic number, because the mean of its divisors is an integer number (12222336).

Almost surely, 2^82645988 is an apocalyptic number.

It is an amenable number.

82645988 is a deficient number, since it is larger than the sum of its proper divisors (64022044).

82645988 is a wasteful number, since it uses less digits than its factorization.

82645988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291082 (or 291080 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 82645988 is about 9090.9838851469. The cubic root of 82645988 is about 435.5860125034.

The spelling of 82645988 in words is "eighty-two million, six hundred forty-five thousand, nine hundred eighty-eight".