77650945 has 8 divisors (see below), whose sum is σ = 93464640. Its totient is φ = 61931760.

The previous prime is 77650943. The next prime is 77650949. The reversal of 77650945 is 54905677.

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

It is not a de Polignac number, because 77650945 - 2¹ = 77650943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77650943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21805 + ... + 25114.

It is an arithmetic number, because the mean of its divisors is an integer number (11683080).

Almost surely, 2^77650945 is an apocalyptic number.

It is an amenable number.

77650945 is a deficient number, since it is larger than the sum of its proper divisors (15813695).

77650945 is a wasteful number, since it uses less digits than its factorization.

77650945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47255.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 77650945 is about 8811.9773603885. The cubic root of 77650945 is about 426.6275676926.

The spelling of 77650945 in words is "seventy-seven million, six hundred fifty thousand, nine hundred forty-five".