61140923 has 4 divisors (see below), whose sum is σ = 63799248. Its totient is φ = 58482600.

The previous prime is 61140907. The next prime is 61140929. The reversal of 61140923 is 32904116.

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 61140923 - 2⁴ = 61140907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61140892 and 61140901.

It is not an unprimeable number, because it can be changed into a prime (61140929) 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, 1329128 + ... + 1329173.

It is an arithmetic number, because the mean of its divisors is an integer number (15949812).

Almost surely, 2^61140923 is an apocalyptic number.

61140923 is a deficient number, since it is larger than the sum of its proper divisors (2658325).

61140923 is a wasteful number, since it uses less digits than its factorization.

61140923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658324.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 61140923 is about 7819.2661420366. The cubic root of 61140923 is about 393.9526234187.

The spelling of 61140923 in words is "sixty-one million, one hundred forty thousand, nine hundred twenty-three".