6547077640 has 32 divisors (see below), whose sum is σ = 14755489560. Its totient is φ = 2614464000.

The previous prime is 6547077637. The next prime is 6547077763. The reversal of 6547077640 is 467707456.

It can be written as a sum of positive squares in 4 ways, for example, as 6524439076 + 22638564 = 80774^2 + 4758^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112131 + ... + 160210.

Almost surely, 2^6547077640 is an apocalyptic number.

It is an amenable number.

6547077640 is an abundant number, since it is smaller than the sum of its proper divisors (8208411920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6547077640 is a wasteful number, since it uses less digits than its factorization.

6547077640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272953 (or 272949 counting only the distinct ones).

The product of its (nonzero) digits is 987840, while the sum is 46.

The square root of 6547077640 is about 80914.0138665732. The cubic root of 6547077640 is about 1870.7503294518.

The spelling of 6547077640 in words is "six billion, five hundred forty-seven million, seventy-seven thousand, six hundred forty".