61798072 has 32 divisors (see below), whose sum is σ = 136994400. Its totient is φ = 25570944.

The previous prime is 61798039. The next prime is 61798123. The reversal of 61798072 is 27089716.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17403 + ... + 20650.

It is an arithmetic number, because the mean of its divisors is an integer number (4281075).

Almost surely, 2^61798072 is an apocalyptic number.

It is an amenable number.

61798072 is an abundant number, since it is smaller than the sum of its proper divisors (75196328).

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

61798072 is a wasteful number, since it uses less digits than its factorization.

61798072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38095 (or 38091 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 61798072 is about 7861.1749757908. The cubic root of 61798072 is about 395.3590113125.

It can be divided in two parts, 617 and 98072, that added together give a palindrome (98689).

The spelling of 61798072 in words is "sixty-one million, seven hundred ninety-eight thousand, seventy-two".