61536634 has 8 divisors (see below), whose sum is σ = 97734708. Its totient is φ = 28958400.

The previous prime is 61536599. The next prime is 61536659. The reversal of 61536634 is 43663516.

It can be written as a sum of positive squares in 2 ways, for example, as 56927025 + 4609609 = 7545^2 + 2147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 1809901 = 61536634 / (6 + 1 + 5 + 3 + 6 + 6 + 3 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 61536634.

It is an unprimeable number.

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, 904917 + ... + 904984.

Almost surely, 2^61536634 is an apocalyptic number.

61536634 is a deficient number, since it is larger than the sum of its proper divisors (36198074).

61536634 is a wasteful number, since it uses less digits than its factorization.

61536634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809920.

The product of its digits is 38880, while the sum is 34.

The square root of 61536634 is about 7844.5289214841. The cubic root of 61536634 is about 394.8006984744.

It can be divided in two parts, 615 and 36634, that added together give a square (37249 = 193²).

The spelling of 61536634 in words is "sixty-one million, five hundred thirty-six thousand, six hundred thirty-four".