82657650 has 48 divisors (see below), whose sum is σ = 205549344. Its totient is φ = 21982080.

The previous prime is 82657649. The next prime is 82657661. The reversal of 82657650 is 5675628.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 82657599 and 82657608.

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 23 ways as a sum of consecutive naturals, for example, 96022 + ... + 96878.

It is an arithmetic number, because the mean of its divisors is an integer number (4282278).

Almost surely, 2^82657650 is an apocalyptic number.

82657650 is an abundant number, since it is smaller than the sum of its proper divisors (122891694).

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

82657650 is a wasteful number, since it uses less digits than its factorization.

82657650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1510 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 82657650 is about 9091.6252672446. The cubic root of 82657650 is about 435.6064997458.

The spelling of 82657650 in words is "eighty-two million, six hundred fifty-seven thousand, six hundred fifty".