647498323 has 4 divisors (see below), whose sum is σ = 675650448. Its totient is φ = 619346200.

The previous prime is 647498317. The next prime is 647498339. The reversal of 647498323 is 323894746.

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 647498323 - 2¹⁷ = 647367251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647498923) 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, 14076028 + ... + 14076073.

It is an arithmetic number, because the mean of its divisors is an integer number (168912612).

Almost surely, 2^647498323 is an apocalyptic number.

647498323 is a deficient number, since it is larger than the sum of its proper divisors (28152125).

647498323 is a wasteful number, since it uses less digits than its factorization.

647498323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28152124.

The product of its digits is 870912, while the sum is 46.

The square root of 647498323 is about 25445.9883478713. The cubic root of 647498323 is about 865.1263686540.

The spelling of 647498323 in words is "six hundred forty-seven million, four hundred ninety-eight thousand, three hundred twenty-three".