61870823 has 8 divisors (see below), whose sum is σ = 72990720. Its totient is φ = 51321240.

The previous prime is 61870819. The next prime is 61870843. The reversal of 61870823 is 32807816.

61870823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 61870823 - 2² = 61870819 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 (61870843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142343 + ... + 142776.

It is an arithmetic number, because the mean of its divisors is an integer number (9123840).

Almost surely, 2^61870823 is an apocalyptic number.

61870823 is a deficient number, since it is larger than the sum of its proper divisors (11119897).

61870823 is a wasteful number, since it uses less digits than its factorization.

61870823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285157.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 61870823 is about 7865.8008492461. The cubic root of 61870823 is about 395.5140942734.

The spelling of 61870823 in words is "sixty-one million, eight hundred seventy thousand, eight hundred twenty-three".