77306403 has 4 divisors (see below), whose sum is σ = 103075208. Its totient is φ = 51537600.

The previous prime is 77306401. The next prime is 77306419. The reversal of 77306403 is 30460377.

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

It is not a de Polignac number, because 77306403 - 2¹ = 77306401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77306401) by changing a digit.

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, 12884398 + ... + 12884403.

It is an arithmetic number, because the mean of its divisors is an integer number (25768802).

Almost surely, 2^77306403 is an apocalyptic number.

77306403 is a deficient number, since it is larger than the sum of its proper divisors (25768805).

77306403 is a wasteful number, since it uses less digits than its factorization.

77306403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25768804.

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 77306403 is about 8792.4059847120. The cubic root of 77306403 is about 425.9956412523.

The spelling of 77306403 in words is "seventy-seven million, three hundred six thousand, four hundred three".