61197438 has 8 divisors (see below), whose sum is σ = 122394888. Its totient is φ = 20399144.

The previous prime is 61197427. The next prime is 61197439. The reversal of 61197438 is 83479116.

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

61197438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 61197396 and 61197405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61197439) 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, 5099781 + ... + 5099792.

It is an arithmetic number, because the mean of its divisors is an integer number (15299361).

Almost surely, 2^61197438 is an apocalyptic number.

61197438 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.

61197438 is a wasteful number, since it uses less digits than its factorization.

61197438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10199578.

The product of its digits is 36288, while the sum is 39.

The square root of 61197438 is about 7822.8791375043. The cubic root of 61197438 is about 394.0739680928.

It can be divided in two parts, 6119743 and 8, that added together give a triangular number (6119751 = T₃₄₉₈).

The spelling of 61197438 in words is "sixty-one million, one hundred ninety-seven thousand, four hundred thirty-eight".