61634107 has 4 divisors (see below), whose sum is σ = 63622336. Its totient is φ = 59645880.

The previous prime is 61634051. The next prime is 61634143. The reversal of 61634107 is 70143616.

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 61634107 - 2¹⁹ = 61109819 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61634207) 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, 994068 + ... + 994129.

It is an arithmetic number, because the mean of its divisors is an integer number (15905584).

Almost surely, 2^61634107 is an apocalyptic number.

61634107 is a deficient number, since it is larger than the sum of its proper divisors (1988229).

61634107 is a wasteful number, since it uses less digits than its factorization.

61634107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988228.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61634107 is about 7850.7392645534. The cubic root of 61634107 is about 395.0090410792.

The spelling of 61634107 in words is "sixty-one million, six hundred thirty-four thousand, one hundred seven".