61193983 has 4 divisors (see below), whose sum is σ = 61253920. Its totient is φ = 61134048.

The previous prime is 61193933. The next prime is 61193987. The reversal of 61193983 is 38939116.

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 61193983 - 2¹³ = 61185791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61193987) 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, 28410 + ... + 30487.

It is an arithmetic number, because the mean of its divisors is an integer number (15313480).

Almost surely, 2^61193983 is an apocalyptic number.

61193983 is a deficient number, since it is larger than the sum of its proper divisors (59937).

61193983 is a wasteful number, since it uses less digits than its factorization.

61193983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59936.

The product of its digits is 34992, while the sum is 40.

The square root of 61193983 is about 7822.6583077621. The cubic root of 61193983 is about 394.0665519262.

The spelling of 61193983 in words is "sixty-one million, one hundred ninety-three thousand, nine hundred eighty-three".