61945593 has 4 divisors (see below), whose sum is σ = 82594128. Its totient is φ = 41297060.

The previous prime is 61945549. The next prime is 61945619. The reversal of 61945593 is 39554916.

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 a cyclic number.

It is not a de Polignac number, because 61945593 - 2¹⁰ = 61944569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61945493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10324263 + ... + 10324268.

It is an arithmetic number, because the mean of its divisors is an integer number (20648532).

Almost surely, 2^61945593 is an apocalyptic number.

It is an amenable number.

61945593 is a deficient number, since it is larger than the sum of its proper divisors (20648535).

61945593 is a wasteful number, since it uses less digits than its factorization.

61945593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20648534.

The product of its digits is 145800, while the sum is 42.

The square root of 61945593 is about 7870.5522677891. The cubic root of 61945593 is about 395.6733545014.

The spelling of 61945593 in words is "sixty-one million, nine hundred forty-five thousand, five hundred ninety-three".