61868093 has 4 divisors (see below), whose sum is σ = 70706400. Its totient is φ = 53029788.

The previous prime is 61868089. The next prime is 61868101. The reversal of 61868093 is 39086816.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 61868093 - 2² = 61868089 is a prime.

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 61868093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61868003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4419143 + ... + 4419156.

It is an arithmetic number, because the mean of its divisors is an integer number (17676600).

Almost surely, 2^61868093 is an apocalyptic number.

It is an amenable number.

61868093 is a deficient number, since it is larger than the sum of its proper divisors (8838307).

61868093 is an equidigital number, since it uses as much as digits as its factorization.

61868093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838306.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 61868093 is about 7865.6273112829. The cubic root of 61868093 is about 395.5082769414.

The spelling of 61868093 in words is "sixty-one million, eight hundred sixty-eight thousand, ninety-three".