63909145 has 8 divisors (see below), whose sum is σ = 76798656. Its totient is φ = 51055536.

The previous prime is 63909059. The next prime is 63909187. The reversal of 63909145 is 54190936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63909145 - 2²³ = 55520537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4887 + ... + 12316.

It is an arithmetic number, because the mean of its divisors is an integer number (9599832).

Almost surely, 2^63909145 is an apocalyptic number.

It is an amenable number.

63909145 is a deficient number, since it is larger than the sum of its proper divisors (12889511).

63909145 is a wasteful number, since it uses less digits than its factorization.

63909145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17951.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 63909145 is about 7994.3195457775. The cubic root of 63909145 is about 399.8106291108.

The spelling of 63909145 in words is "sixty-three million, nine hundred nine thousand, one hundred forty-five".