6473747645 has 16 divisors (see below), whose sum is σ = 8228848320. Its totient is φ = 4872347904.

The previous prime is 6473747641. The next prime is 6473747663. The reversal of 6473747645 is 5467473746.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6473747645 - 2² = 6473747641 is a prime.

It is a super-2 number, since 2×6473747645² = 83818817142286092050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6473747641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211694 + ... + 240336.

It is an arithmetic number, because the mean of its divisors is an integer number (514303020).

Almost surely, 2^6473747645 is an apocalyptic number.

It is an amenable number.

6473747645 is a deficient number, since it is larger than the sum of its proper divisors (1755100675).

6473747645 is a wasteful number, since it uses less digits than its factorization.

6473747645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31324.

The product of its digits is 11854080, while the sum is 53.

The square root of 6473747645 is about 80459.6025655111. The cubic root of 6473747645 is about 1863.7396957826.

The spelling of 6473747645 in words is "six billion, four hundred seventy-three million, seven hundred forty-seven thousand, six hundred forty-five".