63420290 has 16 divisors (see below), whose sum is σ = 120165120. Its totient is φ = 24032880.

The previous prime is 63420289. The next prime is 63420299. The reversal of 63420290 is 9202436.

It is not an unprimeable number, because it can be changed into a prime (63420299) 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, 166706 + ... + 167085.

It is an arithmetic number, because the mean of its divisors is an integer number (7510320).

Almost surely, 2^63420290 is an apocalyptic number.

63420290 is a deficient number, since it is larger than the sum of its proper divisors (56744830).

63420290 is a wasteful number, since it uses less digits than its factorization.

63420290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333817.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 63420290 is about 7963.6857044964. The cubic root of 63420290 is about 398.7886058474.

The spelling of 63420290 in words is "sixty-three million, four hundred twenty thousand, two hundred ninety".