102685506 has 64 divisors (see below), whose sum is σ = 261550080. Its totient is φ = 26098560.

The previous prime is 102685489. The next prime is 102685507. The reversal of 102685506 is 605586201.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (102685507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19350 + ... + 24078.

It is an arithmetic number, because the mean of its divisors is an integer number (4086720).

Almost surely, 2^102685506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102685506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130775040).

102685506 is an abundant number, since it is smaller than the sum of its proper divisors (158864574).

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

102685506 is a wasteful number, since it uses less digits than its factorization.

102685506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 102685506 is about 10133.3857125839. The cubic root of 102685506 is about 468.2772391231.

The spelling of 102685506 in words is "one hundred two million, six hundred eighty-five thousand, five hundred six".