6466353990 has 16 divisors (see below), whose sum is σ = 15519249648. Its totient is φ = 1724361056.

The previous prime is 6466353917. The next prime is 6466353997. The reversal of 6466353990 is 993536646.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6466353997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107772537 + ... + 107772596.

It is an arithmetic number, because the mean of its divisors is an integer number (969953103).

Almost surely, 2^6466353990 is an apocalyptic number.

6466353990 is an abundant number, since it is smaller than the sum of its proper divisors (9052895658).

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

6466353990 is a wasteful number, since it uses less digits than its factorization.

6466353990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215545143.

The product of its (nonzero) digits is 3149280, while the sum is 51.

The square root of 6466353990 is about 80413.6430588740. The cubic root of 6466353990 is about 1863.0299009627.

The spelling of 6466353990 in words is "six billion, four hundred sixty-six million, three hundred fifty-three thousand, nine hundred ninety".