61823971 has 8 divisors (see below), whose sum is σ = 67727088. Its totient is φ = 55968000.

The previous prime is 61823963. The next prime is 61824011. The reversal of 61823971 is 17932816.

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

It is not a de Polignac number, because 61823971 - 2³ = 61823963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61823971.

It is not an unprimeable number, because it can be changed into a prime (61823171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9010 + ... + 14311.

It is an arithmetic number, because the mean of its divisors is an integer number (8465886).

Almost surely, 2^61823971 is an apocalyptic number.

61823971 is a deficient number, since it is larger than the sum of its proper divisors (5903117).

61823971 is a wasteful number, since it uses less digits than its factorization.

61823971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23573.

The product of its digits is 18144, while the sum is 37.

The square root of 61823971 is about 7862.8220760742. The cubic root of 61823971 is about 395.4142340329.

It can be divided in two parts, 6182 and 3971, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 61823971 in words is "sixty-one million, eight hundred twenty-three thousand, nine hundred seventy-one".