61867842 has 8 divisors (see below), whose sum is σ = 123735696. Its totient is φ = 20622612.

The previous prime is 61867789. The next prime is 61867843. The reversal of 61867842 is 24876816.

It is a sphenic number, since it is the product of 3 distinct primes.

61867842 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 61867794 and 61867803.

It is not an unprimeable number, because it can be changed into a prime (61867843) 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, 5155648 + ... + 5155659.

It is an arithmetic number, because the mean of its divisors is an integer number (15466962).

Almost surely, 2^61867842 is an apocalyptic number.

61867842 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61867842 is a wasteful number, since it uses less digits than its factorization.

61867842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311312.

The product of its digits is 129024, while the sum is 42.

The square root of 61867842 is about 7865.6113557689. The cubic root of 61867842 is about 395.5077420792.

It can be divided in two parts, 6186 and 7842, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 61867842 in words is "sixty-one million, eight hundred sixty-seven thousand, eight hundred forty-two".