61272013 has 8 divisors (see below), whose sum is σ = 67093920. Its totient is φ = 55492080.

The previous prime is 61272007. The next prime is 61272019. The reversal of 61272013 is 31027216.

It is an interprime number because it is at equal distance from previous prime (61272007) and next prime (61272019).

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 61272013 - 2⁹ = 61271501 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 (61272019) 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, 7395 + ... + 13312.

It is an arithmetic number, because the mean of its divisors is an integer number (8386740).

Almost surely, 2^61272013 is an apocalyptic number.

It is an amenable number.

61272013 is a deficient number, since it is larger than the sum of its proper divisors (5821907).

61272013 is a wasteful number, since it uses less digits than its factorization.

61272013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20987.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 61272013 is about 7827.6441538946. The cubic root of 61272013 is about 394.2339755365.

Adding to 61272013 its reverse (31027216), we get a palindrome (92299229).

The spelling of 61272013 in words is "sixty-one million, two hundred seventy-two thousand, thirteen".