63329661 has 8 divisors (see below), whose sum is σ = 93821760. Its totient is φ = 42219756.

The previous prime is 63329627. The next prime is 63329677. The reversal of 63329661 is 16692336.

It is not a de Polignac number, because 63329661 - 2¹¹ = 63327613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63322661) 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, 1172745 + ... + 1172798.

It is an arithmetic number, because the mean of its divisors is an integer number (11727720).

Almost surely, 2^63329661 is an apocalyptic number.

It is an amenable number.

63329661 is a deficient number, since it is larger than the sum of its proper divisors (30492099).

63329661 is a wasteful number, since it uses less digits than its factorization.

63329661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345552 (or 2345546 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 63329661 is about 7957.9935285221. The cubic root of 63329661 is about 398.5985560381.

The spelling of 63329661 in words is "sixty-three million, three hundred twenty-nine thousand, six hundred sixty-one".