63947290 has 48 divisors (see below), whose sum is σ = 129706920. Its totient is φ = 22668800.

The previous prime is 63947287. The next prime is 63947297. The reversal of 63947290 is 9274936.

It can be written as a sum of positive squares in 4 ways, for example, as 44876601 + 19070689 = 6699^2 + 4367^2 .

It is not an unprimeable number, because it can be changed into a prime (63947297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48966 + ... + 50254.

Almost surely, 2^63947290 is an apocalyptic number.

63947290 is an abundant number, since it is smaller than the sum of its proper divisors (65759630).

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

63947290 is a wasteful number, since it uses less digits than its factorization.

63947290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 63947290 is about 7996.7049464139. The cubic root of 63947290 is about 399.8901573392.

The spelling of 63947290 in words is "sixty-three million, nine hundred forty-seven thousand, two hundred ninety".