63879481 has 4 divisors (see below), whose sum is σ = 64779264. Its totient is φ = 62979700.

The previous prime is 63879461. The next prime is 63879503. The reversal of 63879481 is 18497836.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63879481 - 2¹¹ = 63877433 is a prime.

It is a super-2 number, since 2×63879481² = 8161176185658722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63879461) 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, 449785 + ... + 449926.

It is an arithmetic number, because the mean of its divisors is an integer number (16194816).

Almost surely, 2^63879481 is an apocalyptic number.

It is an amenable number.

63879481 is a deficient number, since it is larger than the sum of its proper divisors (899783).

63879481 is an equidigital number, since it uses as much as digits as its factorization.

63879481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899782.

The product of its digits is 290304, while the sum is 46.

The square root of 63879481 is about 7992.4640130563. The cubic root of 63879481 is about 399.7487609804.

The spelling of 63879481 in words is "sixty-three million, eight hundred seventy-nine thousand, four hundred eighty-one".