82660740 has 24 divisors (see below), whose sum is σ = 231450240. Its totient is φ = 22042848.

The previous prime is 82660717. The next prime is 82660763. The reversal of 82660740 is 4706628.

It is an interprime number because it is at equal distance from previous prime (82660717) and next prime (82660763).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 688780 + ... + 688899.

It is an arithmetic number, because the mean of its divisors is an integer number (9643760).

Almost surely, 2^82660740 is an apocalyptic number.

It is an amenable number.

82660740 is an abundant number, since it is smaller than the sum of its proper divisors (148789500).

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

82660740 is a wasteful number, since it uses less digits than its factorization.

82660740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377691 (or 1377689 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 82660740 is about 9091.7952022689. The cubic root of 82660740 is about 435.6119277866.

The spelling of 82660740 in words is "eighty-two million, six hundred sixty thousand, seven hundred forty".