77469245 has 12 divisors (see below), whose sum is σ = 108141084. Its totient is φ = 53121600.

The previous prime is 77469239. The next prime is 77469263. The reversal of 77469245 is 54296477.

It can be written as a sum of positive squares in 2 ways, for example, as 55995289 + 21473956 = 7483^2 + 4634^2 .

It is not a de Polignac number, because 77469245 - 2⁶ = 77469181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77469196 and 77469205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157856 + ... + 158345.

It is an arithmetic number, because the mean of its divisors is an integer number (9011757).

Almost surely, 2^77469245 is an apocalyptic number.

It is an amenable number.

77469245 is a deficient number, since it is larger than the sum of its proper divisors (30671839).

77469245 is a wasteful number, since it uses less digits than its factorization.

77469245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316220 (or 316213 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 77469245 is about 8801.6614908777. The cubic root of 77469245 is about 426.2945441820.

The spelling of 77469245 in words is "seventy-seven million, four hundred sixty-nine thousand, two hundred forty-five".