63672506 has 4 divisors (see below), whose sum is σ = 95508762. Its totient is φ = 31836252.

The previous prime is 63672503. The next prime is 63672509. The reversal of 63672506 is 60527636.

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

It is an interprime number because it is at equal distance from previous prime (63672503) and next prime (63672509).

It can be written as a sum of positive squares in only one way, i.e., 41667025 + 22005481 = 6455^2 + 4691^2 .

It is not an unprimeable number, because it can be changed into a prime (63672503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15918125 + ... + 15918128.

Almost surely, 2^63672506 is an apocalyptic number.

63672506 is a deficient number, since it is larger than the sum of its proper divisors (31836256).

63672506 is a wasteful number, since it uses less digits than its factorization.

63672506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31836255.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 63672506 is about 7979.5053731419. The cubic root of 63672506 is about 399.3165537515.

The spelling of 63672506 in words is "sixty-three million, six hundred seventy-two thousand, five hundred six".