61636367 has 4 divisors (see below), whose sum is σ = 66377640. Its totient is φ = 56895096.

The previous prime is 61636357. The next prime is 61636369. The reversal of 61636367 is 76363616.

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

It is a cyclic number.

It is not a de Polignac number, because 61636367 - 2⁶ = 61636303 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61636367.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61636369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370617 + ... + 2370642.

It is an arithmetic number, because the mean of its divisors is an integer number (16594410).

Almost surely, 2^61636367 is an apocalyptic number.

61636367 is a deficient number, since it is larger than the sum of its proper divisors (4741273).

61636367 is a wasteful number, since it uses less digits than its factorization.

61636367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741272.

The product of its digits is 81648, while the sum is 38.

The square root of 61636367 is about 7850.8831987236. The cubic root of 61636367 is about 395.0138690852.

The spelling of 61636367 in words is "sixty-one million, six hundred thirty-six thousand, three hundred sixty-seven".