63801697 has 8 divisors (see below), whose sum is σ = 68315400. Its totient is φ = 59372544.

The previous prime is 63801671. The next prime is 63801707. The reversal of 63801697 is 79610836.

63801697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 27029601 + 36772096 = 5199^2 + 6064^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63801697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63801667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19572 + ... + 22597.

It is an arithmetic number, because the mean of its divisors is an integer number (8539425).

Almost surely, 2^63801697 is an apocalyptic number.

It is an amenable number.

63801697 is a deficient number, since it is larger than the sum of its proper divisors (4513703).

63801697 is a wasteful number, since it uses less digits than its factorization.

63801697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42275.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 63801697 is about 7987.5964469920. The cubic root of 63801697 is about 399.5864413204.

The spelling of 63801697 in words is "sixty-three million, eight hundred one thousand, six hundred ninety-seven".