82645157 has 8 divisors (see below), whose sum is σ = 97708800. Its totient is φ = 68395824.

The previous prime is 82645153. The next prime is 82645159. The reversal of 82645157 is 75154628.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82645157 - 2² = 82645153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82645157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82645151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203357 + ... + 203762.

It is an arithmetic number, because the mean of its divisors is an integer number (12213600).

Almost surely, 2^82645157 is an apocalyptic number.

It is an amenable number.

82645157 is a deficient number, since it is larger than the sum of its proper divisors (15063643).

82645157 is a wasteful number, since it uses less digits than its factorization.

82645157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407155.

The product of its digits is 67200, while the sum is 38.

The square root of 82645157 is about 9090.9381804080. The cubic root of 82645157 is about 435.5845525689.

The spelling of 82645157 in words is "eighty-two million, six hundred forty-five thousand, one hundred fifty-seven".