6446240624 has 10 divisors (see below), whose sum is σ = 12489591240. Its totient is φ = 3223120304.

The previous prime is 6446240617. The next prime is 6446240627. The reversal of 6446240624 is 4260426446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446240627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201445004 + ... + 201445035.

It is an arithmetic number, because the mean of its divisors is an integer number (1248959124).

Almost surely, 2^6446240624 is an apocalyptic number.

It is an amenable number.

6446240624 is a deficient number, since it is larger than the sum of its proper divisors (6043350616).

6446240624 is a wasteful number, since it uses less digits than its factorization.

6446240624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402890047 (or 402890041 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 38.

The square root of 6446240624 is about 80288.4837570121. The cubic root of 6446240624 is about 1861.0962651418.

The spelling of 6446240624 in words is "six billion, four hundred forty-six million, two hundred forty thousand, six hundred twenty-four".