63121267 has 4 divisors (see below), whose sum is σ = 68859576. Its totient is φ = 57382960.

The previous prime is 63121259. The next prime is 63121271. The reversal of 63121267 is 76212136.

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

It is a cyclic number.

It is not a de Polignac number, because 63121267 - 2³ = 63121259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63121217) 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, 2869138 + ... + 2869159.

It is an arithmetic number, because the mean of its divisors is an integer number (17214894).

Almost surely, 2^63121267 is an apocalyptic number.

63121267 is a deficient number, since it is larger than the sum of its proper divisors (5738309).

63121267 is a wasteful number, since it uses less digits than its factorization.

63121267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738308.

The product of its digits is 3024, while the sum is 28.

The square root of 63121267 is about 7944.8893636098. The cubic root of 63121267 is about 398.1608631490.

The spelling of 63121267 in words is "sixty-three million, one hundred twenty-one thousand, two hundred sixty-seven".