6277742440 has 16 divisors (see below), whose sum is σ = 14124920580. Its totient is φ = 2511096960.

The previous prime is 6277742423. The next prime is 6277742447. The reversal of 6277742440 is 442477726.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6197783076 + 79959364 = 78726^2 + 8942^2 .

It is not an unprimeable number, because it can be changed into a prime (6277742447) 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, 78471741 + ... + 78471820.

Almost surely, 2^6277742440 is an apocalyptic number.

It is an amenable number.

6277742440 is an abundant number, since it is smaller than the sum of its proper divisors (7847178140).

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

6277742440 is a wasteful number, since it uses less digits than its factorization.

6277742440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156943572 (or 156943568 counting only the distinct ones).

The product of its (nonzero) digits is 526848, while the sum is 43.

The square root of 6277742440 is about 79232.2058256616. The cubic root of 6277742440 is about 1844.7371672902.

The spelling of 6277742440 in words is "six billion, two hundred seventy-seven million, seven hundred forty-two thousand, four hundred forty".