61634836 has 6 divisors (see below), whose sum is σ = 107860970. Its totient is φ = 30817416.

The previous prime is 61634819. The next prime is 61634861. The reversal of 61634836 is 63843616.

61634836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 58430736 + 3204100 = 7644^2 + 1790^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61634795 and 61634804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7704351 + ... + 7704358.

Almost surely, 2^61634836 is an apocalyptic number.

It is an amenable number.

61634836 is a deficient number, since it is larger than the sum of its proper divisors (46226134).

61634836 is a wasteful number, since it uses less digits than its factorization.

61634836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15408713 (or 15408711 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 61634836 is about 7850.7856931647. The cubic root of 61634836 is about 395.0105984445.

The spelling of 61634836 in words is "sixty-one million, six hundred thirty-four thousand, eight hundred thirty-six".