61879843 has 4 divisors (see below), whose sum is σ = 62027248. Its totient is φ = 61732440.

The previous prime is 61879739. The next prime is 61879859. The reversal of 61879843 is 34897816.

It is a happy number.

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 61879843 - 2⁹ = 61879331 is a prime.

It is a super-2 number, since 2×61879843² = 7658229939409298, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61879793 and 61879802.

It is not an unprimeable number, because it can be changed into a prime (61879043) 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, 73071 + ... + 73912.

It is an arithmetic number, because the mean of its divisors is an integer number (15506812).

Almost surely, 2^61879843 is an apocalyptic number.

61879843 is a deficient number, since it is larger than the sum of its proper divisors (147405).

61879843 is a wasteful number, since it uses less digits than its factorization.

61879843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147404.

The product of its digits is 290304, while the sum is 46.

The square root of 61879843 is about 7866.3741965406. The cubic root of 61879843 is about 395.5333136922.

The spelling of 61879843 in words is "sixty-one million, eight hundred seventy-nine thousand, eight hundred forty-three".