61513206 has 16 divisors (see below), whose sum is σ = 123483648. Its totient is φ = 20428200.

The previous prime is 61513189. The next prime is 61513211. The reversal of 61513206 is 60231516.

It is a Curzon number.

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, 17290 + ... + 20541.

It is an arithmetic number, because the mean of its divisors is an integer number (7717728).

Almost surely, 2^61513206 is an apocalyptic number.

61513206 is an abundant number, since it is smaller than the sum of its proper divisors (61970442).

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

61513206 is a wasteful number, since it uses less digits than its factorization.

61513206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38107.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61513206 is about 7843.0355092910. The cubic root of 61513206 is about 394.7505897603.

The spelling of 61513206 in words is "sixty-one million, five hundred thirteen thousand, two hundred six".