63412257 has 4 divisors (see below), whose sum is σ = 84549680. Its totient is φ = 42274836.

The previous prime is 63412213. The next prime is 63412277. The reversal of 63412257 is 75221436.

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 not a de Polignac number, because 63412257 - 2¹⁰ = 63411233 is a prime.

It is a super-2 number, since 2×63412257² = 8042228675668098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63412277) 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, 10568707 + ... + 10568712.

It is an arithmetic number, because the mean of its divisors is an integer number (21137420).

Almost surely, 2^63412257 is an apocalyptic number.

It is an amenable number.

63412257 is a deficient number, since it is larger than the sum of its proper divisors (21137423).

63412257 is a wasteful number, since it uses less digits than its factorization.

63412257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21137422.

The product of its digits is 10080, while the sum is 30.

The square root of 63412257 is about 7963.1813366267. The cubic root of 63412257 is about 398.7717678915.

The spelling of 63412257 in words is "sixty-three million, four hundred twelve thousand, two hundred fifty-seven".