63672481 has 4 divisors (see below), whose sum is σ = 65726464. Its totient is φ = 61618500.

The previous prime is 63672473. The next prime is 63672491. The reversal of 63672481 is 18427636.

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 63672481 - 2³ = 63672473 is a prime.

It is a super-2 number, since 2×63672481² = 8108369673390722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63672481.

It is not an unprimeable number, because it can be changed into a prime (63672491) 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, 1026945 + ... + 1027006.

It is an arithmetic number, because the mean of its divisors is an integer number (16431616).

Almost surely, 2^63672481 is an apocalyptic number.

It is an amenable number.

63672481 is a deficient number, since it is larger than the sum of its proper divisors (2053983).

63672481 is a wasteful number, since it uses less digits than its factorization.

63672481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053982.

The product of its digits is 48384, while the sum is 37.

The square root of 63672481 is about 7979.5038066286. The cubic root of 63672481 is about 399.3165014897.

The spelling of 63672481 in words is "sixty-three million, six hundred seventy-two thousand, four hundred eighty-one".