61366015 has 16 divisors (see below), whose sum is σ = 74954880. Its totient is φ = 48222720.

The previous prime is 61366013. The next prime is 61366021. The reversal of 61366015 is 51066316.

It is not a de Polignac number, because 61366015 - 2¹ = 61366013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61366013) 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, 132885 + ... + 133345.

It is an arithmetic number, because the mean of its divisors is an integer number (4684680).

Almost surely, 2^61366015 is an apocalyptic number.

61366015 is a deficient number, since it is larger than the sum of its proper divisors (13588865).

61366015 is a wasteful number, since it uses less digits than its factorization.

61366015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 61366015 is about 7833.6463412641. The cubic root of 61366015 is about 394.4354805137.

The spelling of 61366015 in words is "sixty-one million, three hundred sixty-six thousand, fifteen".