78850745 has 8 divisors (see below), whose sum is σ = 94805640. Its totient is φ = 62957440.

The previous prime is 78850711. The next prime is 78850757. The reversal of 78850745 is 54705887.

It can be written as a sum of positive squares in 4 ways, for example, as 11397376 + 67453369 = 3376^2 + 8213^2 .

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

It is not a de Polignac number, because 78850745 - 2¹⁶ = 78785209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78850696 and 78850705.

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, 12530 + ... + 17739.

It is an arithmetic number, because the mean of its divisors is an integer number (11850705).

Almost surely, 2^78850745 is an apocalyptic number.

It is an amenable number.

78850745 is a deficient number, since it is larger than the sum of its proper divisors (15954895).

78850745 is a wasteful number, since it uses less digits than its factorization.

78850745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30795.

The product of its (nonzero) digits is 313600, while the sum is 44.

The square root of 78850745 is about 8879.7941980656. The cubic root of 78850745 is about 428.8136489753.

The spelling of 78850745 in words is "seventy-eight million, eight hundred fifty thousand, seven hundred forty-five".