78528603 has 4 divisors (see below), whose sum is σ = 104704808. Its totient is φ = 52352400.

The previous prime is 78528599. The next prime is 78528629. The reversal of 78528603 is 30682587.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 78528603 - 2² = 78528599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78528403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13088098 + ... + 13088103.

It is an arithmetic number, because the mean of its divisors is an integer number (26176202).

Almost surely, 2^78528603 is an apocalyptic number.

78528603 is a deficient number, since it is larger than the sum of its proper divisors (26176205).

78528603 is a wasteful number, since it uses less digits than its factorization.

78528603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26176204.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 78528603 is about 8861.6365869968. The cubic root of 78528603 is about 428.2288841127.

The spelling of 78528603 in words is "seventy-eight million, five hundred twenty-eight thousand, six hundred three".