4577920785 has 24 divisors (see below), whose sum is σ = 7960438824. Its totient is φ = 2433749760.

The previous prime is 4577920751. The next prime is 4577920807. The reversal of 4577920785 is 5870297754.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 516152961 + 4061767824 = 22719^2 + 63732^2 .

It is not a de Polignac number, because 4577920785 - 2²² = 4573726481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148426 + ... + 176595.

It is an arithmetic number, because the mean of its divisors is an integer number (331684951).

Almost surely, 2^4577920785 is an apocalyptic number.

4577920785 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4577920785 is a deficient number, since it is larger than the sum of its proper divisors (3382518039).

4577920785 is a wasteful number, since it uses less digits than its factorization.

4577920785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325345 (or 325342 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The square root of 4577920785 is about 67660.3339113842. Note that the first 3 decimals coincide. The cubic root of 4577920785 is about 1660.4383592158.

It can be divided in two parts, 45779 and 20785, that added together give a square (66564 = 258²).

The spelling of 4577920785 in words is "four billion, five hundred seventy-seven million, nine hundred twenty thousand, seven hundred eighty-five".