647477083 has 4 divisors (see below), whose sum is σ = 706338648. Its totient is φ = 588615520.

The previous prime is 647477081. The next prime is 647477087. The reversal of 647477083 is 380774746.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 647477083 - 2¹ = 647477081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647477081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29430766 + ... + 29430787.

It is an arithmetic number, because the mean of its divisors is an integer number (176584662).

Almost surely, 2^647477083 is an apocalyptic number.

647477083 is a deficient number, since it is larger than the sum of its proper divisors (58861565).

647477083 is a wasteful number, since it uses less digits than its factorization.

647477083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58861564.

The product of its (nonzero) digits is 790272, while the sum is 46.

The square root of 647477083 is about 25445.5709898599. The cubic root of 647477083 is about 865.1169089203.

The spelling of 647477083 in words is "six hundred forty-seven million, four hundred seventy-seven thousand, eighty-three".