647925454 has 16 divisors (see below), whose sum is σ = 1122609456. Its totient is φ = 277187200.

The previous prime is 647925449. The next prime is 647925461. The reversal of 647925454 is 454529746.

It is a super-2 number, since 2×647925454² = 839614787882212232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865837 + ... + 866584.

It is an arithmetic number, because the mean of its divisors is an integer number (70163091).

Almost surely, 2^647925454 is an apocalyptic number.

647925454 is a deficient number, since it is larger than the sum of its proper divisors (474684002).

647925454 is a wasteful number, since it uses less digits than its factorization.

647925454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732451.

The product of its digits is 1209600, while the sum is 46.

The square root of 647925454 is about 25454.3798588769. The cubic root of 647925454 is about 865.3165575982.

The spelling of 647925454 in words is "six hundred forty-seven million, nine hundred twenty-five thousand, four hundred fifty-four".