63667161 has 8 divisors (see below), whose sum is σ = 94321760. Its totient is φ = 42444756.

The previous prime is 63667147. The next prime is 63667181. The reversal of 63667161 is 16176636.

63667161 is a `hidden beast` number, since 636 + 6 + 7 + 16 + 1 = 666.

It is not a de Polignac number, because 63667161 - 2¹¹ = 63665113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63667141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178995 + ... + 1179048.

It is an arithmetic number, because the mean of its divisors is an integer number (11790220).

Almost surely, 2^63667161 is an apocalyptic number.

It is an amenable number.

63667161 is a deficient number, since it is larger than the sum of its proper divisors (30654599).

63667161 is a wasteful number, since it uses less digits than its factorization.

63667161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358052 (or 2358046 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 63667161 is about 7979.1704456040. The cubic root of 63667161 is about 399.3053798721.

It can be divided in two parts, 6366 and 7161, that multiplied together give a triangular number (45586926 = T₉₅₄₈).

The spelling of 63667161 in words is "sixty-three million, six hundred sixty-seven thousand, one hundred sixty-one".