63166261 has 4 divisors (see below), whose sum is σ = 64510272. Its totient is φ = 61822252.

The previous prime is 63166253. The next prime is 63166283. The reversal of 63166261 is 16266136.

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 63166261 - 2³ = 63166253 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 (63166291) 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, 671935 + ... + 672028.

It is an arithmetic number, because the mean of its divisors is an integer number (16127568).

Almost surely, 2^63166261 is an apocalyptic number.

It is an amenable number.

63166261 is a deficient number, since it is larger than the sum of its proper divisors (1344011).

63166261 is a wasteful number, since it uses less digits than its factorization.

63166261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344010.

The product of its digits is 7776, while the sum is 31.

The square root of 63166261 is about 7947.7204908074. The cubic root of 63166261 is about 398.2554461410.

The spelling of 63166261 in words is "sixty-three million, one hundred sixty-six thousand, two hundred sixty-one".