63436990 has 16 divisors (see below), whose sum is σ = 119151648. Its totient is φ = 24271456.

The previous prime is 63436973. The next prime is 63436999. The reversal of 63436990 is 9963436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63436999) 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, 137677 + ... + 138136.

It is an arithmetic number, because the mean of its divisors is an integer number (7446978).

Almost surely, 2^63436990 is an apocalyptic number.

63436990 is a deficient number, since it is larger than the sum of its proper divisors (55714658).

63436990 is a wasteful number, since it uses less digits than its factorization.

63436990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275843.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 63436990 is about 7964.7341449668. The cubic root of 63436990 is about 398.8236061354.

The spelling of 63436990 in words is "sixty-three million, four hundred thirty-six thousand, nine hundred ninety".