647279329534 has 16 divisors (see below), whose sum is σ = 974063538000. Its totient is φ = 322592174784.

The previous prime is 647279329531. The next prime is 647279329553. The reversal of 647279329534 is 435923972746.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647279329531) 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, 1718202 + ... + 2060770.

It is an arithmetic number, because the mean of its divisors is an integer number (60878971125).

Almost surely, 2^647279329534 is an apocalyptic number.

647279329534 is a deficient number, since it is larger than the sum of its proper divisors (326784208466).

647279329534 is a wasteful number, since it uses less digits than its factorization.

647279329534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345627.

The product of its digits is 68584320, while the sum is 61.

The spelling of 647279329534 in words is "six hundred forty-seven billion, two hundred seventy-nine million, three hundred twenty-nine thousand, five hundred thirty-four".