647380584037 has 4 divisors (see below), whose sum is σ = 706233364416. Its totient is φ = 588527803660.

The previous prime is 647380583987. The next prime is 647380584041. The reversal of 647380584037 is 730485083746.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-647380584037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647380584047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29426390173 + ... + 29426390194.

It is an arithmetic number, because the mean of its divisors is an integer number (176558341104).

Almost surely, 2^647380584037 is an apocalyptic number.

It is an amenable number.

647380584037 is a deficient number, since it is larger than the sum of its proper divisors (58852780379).

647380584037 is a wasteful number, since it uses less digits than its factorization.

647380584037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58852780378.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 647380584037 in words is "six hundred forty-seven billion, three hundred eighty million, five hundred eighty-four thousand, thirty-seven".