61272681 has 8 divisors (see below), whose sum is σ = 81929760. Its totient is φ = 40732032.

The previous prime is 61272671. The next prime is 61272683. The reversal of 61272681 is 18627216.

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

It is not a de Polignac number, because 61272681 - 2⁵ = 61272649 is a prime.

It is a super-2 number, since 2×61272681² = 7508682873855522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61272683) 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, 27871 + ... + 29988.

It is an arithmetic number, because the mean of its divisors is an integer number (10241220).

Almost surely, 2^61272681 is an apocalyptic number.

It is an amenable number.

61272681 is a deficient number, since it is larger than the sum of its proper divisors (20657079).

61272681 is a wasteful number, since it uses less digits than its factorization.

61272681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58215.

The product of its digits is 8064, while the sum is 33.

The square root of 61272681 is about 7827.6868230659. The cubic root of 61272681 is about 394.2354082044.

Adding to 61272681 its reverse (18627216), we get a palindrome (79899897).

The spelling of 61272681 in words is "sixty-one million, two hundred seventy-two thousand, six hundred eighty-one".