647130854 has 4 divisors (see below), whose sum is σ = 970696284. Its totient is φ = 323565426.

The previous prime is 647130833. The next prime is 647130907. The reversal of 647130854 is 458031746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161782712 + ... + 161782715.

It is an arithmetic number, because the mean of its divisors is an integer number (242674071).

Almost surely, 2^647130854 is an apocalyptic number.

647130854 is a deficient number, since it is larger than the sum of its proper divisors (323565430).

647130854 is a wasteful number, since it uses less digits than its factorization.

647130854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323565429.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 647130854 is about 25438.7667546994. The cubic root of 647130854 is about 864.9626785105.

The spelling of 647130854 in words is "six hundred forty-seven million, one hundred thirty thousand, eight hundred fifty-four".