63673836 has 12 divisors (see below), whose sum is σ = 148572312. Its totient is φ = 21224608.

The previous prime is 63673811. The next prime is 63673837. The reversal of 63673836 is 63837636.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (63673837) 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, 2653065 + ... + 2653088.

It is an arithmetic number, because the mean of its divisors is an integer number (12381026).

Almost surely, 2^63673836 is an apocalyptic number.

It is an amenable number.

63673836 is an abundant number, since it is smaller than the sum of its proper divisors (84898476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63673836 is a wasteful number, since it uses less digits than its factorization.

63673836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306160 (or 5306158 counting only the distinct ones).

The product of its digits is 326592, while the sum is 42.

The square root of 63673836 is about 7979.5887112056. The cubic root of 63673836 is about 399.3193340583.

The spelling of 63673836 in words is "sixty-three million, six hundred seventy-three thousand, eight hundred thirty-six".