77472245 has 8 divisors (see below), whose sum is σ = 93156000. Its totient is φ = 61851600.

The previous prime is 77472223. The next prime is 77472293. The reversal of 77472245 is 54227477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77472245 - 2¹⁰ = 77471221 is a prime.

It is a super-3 number, since 3×77472245³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77472199 and 77472208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13031 + ... + 18020.

It is an arithmetic number, because the mean of its divisors is an integer number (11644500).

Almost surely, 2^77472245 is an apocalyptic number.

It is an amenable number.

77472245 is a deficient number, since it is larger than the sum of its proper divisors (15683755).

77472245 is a wasteful number, since it uses less digits than its factorization.

77472245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31555.

The product of its digits is 109760, while the sum is 38.

The square root of 77472245 is about 8801.8319115966. The cubic root of 77472245 is about 426.3000468695.

The spelling of 77472245 in words is "seventy-seven million, four hundred seventy-two thousand, two hundred forty-five".