61307013 has 16 divisors (see below), whose sum is σ = 85119552. Its totient is φ = 39216000.

The previous prime is 61307011. The next prime is 61307033. The reversal of 61307013 is 31070316.

It is not a de Polignac number, because 61307013 - 2¹ = 61307011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61307011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3418 + ... + 11588.

It is an arithmetic number, because the mean of its divisors is an integer number (5319972).

Almost surely, 2^61307013 is an apocalyptic number.

It is an amenable number.

61307013 is a deficient number, since it is larger than the sum of its proper divisors (23812539).

61307013 is a wasteful number, since it uses less digits than its factorization.

61307013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8276.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 61307013 is about 7829.8795009885. The cubic root of 61307013 is about 394.3090264557.

Adding to 61307013 its reverse (31070316), we get a palindrome (92377329).

The spelling of 61307013 in words is "sixty-one million, three hundred seven thousand, thirteen".