61814611 has 4 divisors (see below), whose sum is σ = 61854232. Its totient is φ = 61774992.

The previous prime is 61814609. The next prime is 61814633. The reversal of 61814611 is 11641816.

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 61814611 - 2¹ = 61814609 is a prime.

It is a super-2 number, since 2×61814611² = 7642092266162642, which contains 22 as substring.

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 61814611.

It is not an unprimeable number, because it can be changed into a prime (61814681) 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, 17370 + ... + 20623.

It is an arithmetic number, because the mean of its divisors is an integer number (15463558).

Almost surely, 2^61814611 is an apocalyptic number.

61814611 is a deficient number, since it is larger than the sum of its proper divisors (39621).

61814611 is a wasteful number, since it uses less digits than its factorization.

61814611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39620.

The product of its digits is 1152, while the sum is 28.

The square root of 61814611 is about 7862.2268474014. The cubic root of 61814611 is about 395.3942781056.

The spelling of 61814611 in words is "sixty-one million, eight hundred fourteen thousand, six hundred eleven".