102621604 has 12 divisors (see below), whose sum is σ = 185780700. Its totient is φ = 49541408.

The previous prime is 102621599. The next prime is 102621613. The reversal of 102621604 is 406126201.

It can be written as a sum of positive squares in 2 ways, for example, as 29484900 + 73136704 = 5430^2 + 8552^2 .

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 3 ways as a sum of consecutive naturals, for example, 442219 + ... + 442450.

It is an arithmetic number, because the mean of its divisors is an integer number (15481725).

Almost surely, 2^102621604 is an apocalyptic number.

It is an amenable number.

102621604 is a deficient number, since it is larger than the sum of its proper divisors (83159096).

102621604 is a wasteful number, since it uses less digits than its factorization.

102621604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884702 (or 884700 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 102621604 is about 10130.2321789779. The cubic root of 102621604 is about 468.1800814270.

Adding to 102621604 its reverse (406126201), we get a palindrome (508747805).

The spelling of 102621604 in words is "one hundred two million, six hundred twenty-one thousand, six hundred four".