63906522 has 16 divisors (see below), whose sum is σ = 128661312. Its totient is φ = 21160800.

The previous prime is 63906509. The next prime is 63906529. The reversal of 63906522 is 22560936.

It is not an unprimeable number, because it can be changed into a prime (63906529) 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, 34363 + ... + 36174.

It is an arithmetic number, because the mean of its divisors is an integer number (8041332).

Almost surely, 2^63906522 is an apocalyptic number.

63906522 is an abundant number, since it is smaller than the sum of its proper divisors (64754790).

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

63906522 is a wasteful number, since it uses less digits than its factorization.

63906522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70693.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 63906522 is about 7994.1554901065. The cubic root of 63906522 is about 399.8051592748.

The spelling of 63906522 in words is "sixty-three million, nine hundred six thousand, five hundred twenty-two".