63361997 has 4 divisors (see below), whose sum is σ = 63543900. Its totient is φ = 63180096.

The previous prime is 63361957. The next prime is 63361999. The reversal of 63361997 is 79916336.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38700841 + 24661156 = 6221^2 + 4966^2 .

It is a cyclic number.

It is not a de Polignac number, because 63361997 - 2¹² = 63357901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63361999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90428 + ... + 91125.

It is an arithmetic number, because the mean of its divisors is an integer number (15885975).

Almost surely, 2^63361997 is an apocalyptic number.

It is an amenable number.

63361997 is a deficient number, since it is larger than the sum of its proper divisors (181903).

63361997 is a wasteful number, since it uses less digits than its factorization.

63361997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181902.

The product of its digits is 183708, while the sum is 44.

The square root of 63361997 is about 7960.0249371469. The cubic root of 63361997 is about 398.6663857070. Note that the first 3 decimals are identical.

The spelling of 63361997 in words is "sixty-three million, three hundred sixty-one thousand, nine hundred ninety-seven".