772478103 has 4 divisors (see below), whose sum is σ = 1029970808. Its totient is φ = 514985400.

The previous prime is 772478093. The next prime is 772478107. The reversal of 772478103 is 301874277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301874277 = 3 ⋅100624759.

It is not a de Polignac number, because 772478103 - 2⁹ = 772477591 is a prime.

It is a super-2 number, since 2×772478103² = 1193444839228957218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772478107) 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, 128746348 + ... + 128746353.

It is an arithmetic number, because the mean of its divisors is an integer number (257492702).

Almost surely, 2^772478103 is an apocalyptic number.

772478103 is a deficient number, since it is larger than the sum of its proper divisors (257492705).

772478103 is a wasteful number, since it uses less digits than its factorization.

772478103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257492704.

The product of its (nonzero) digits is 65856, while the sum is 39.

The square root of 772478103 is about 27793.4902989891. The cubic root of 772478103 is about 917.5478583286.

The spelling of 772478103 in words is "seven hundred seventy-two million, four hundred seventy-eight thousand, one hundred three".