61672534 has 16 divisors (see below), whose sum is σ = 115335936. Its totient is φ = 24028200.

The previous prime is 61672489. The next prime is 61672543. The reversal of 61672534 is 43527616.

It is a happy number.

61672534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61672534.

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 in 7 ways as a sum of consecutive naturals, for example, 200082 + ... + 200389.

It is an arithmetic number, because the mean of its divisors is an integer number (7208496).

Almost surely, 2^61672534 is an apocalyptic number.

61672534 is a deficient number, since it is larger than the sum of its proper divisors (53663402).

61672534 is a wasteful number, since it uses less digits than its factorization.

61672534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400491.

The product of its digits is 30240, while the sum is 34.

The square root of 61672534 is about 7853.1862323518. The cubic root of 61672534 is about 395.0911160844.

The spelling of 61672534 in words is "sixty-one million, six hundred seventy-two thousand, five hundred thirty-four".