61061015 has 8 divisors (see below), whose sum is σ = 74029200. Its totient is φ = 48344832.

The previous prime is 61061009. The next prime is 61061023. The reversal of 61061015 is 51016016.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61061015 is a prime.

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, 62465 + ... + 63434.

It is an arithmetic number, because the mean of its divisors is an integer number (9253650).

Almost surely, 2^61061015 is an apocalyptic number.

61061015 is a deficient number, since it is larger than the sum of its proper divisors (12968185).

61061015 is a wasteful number, since it uses less digits than its factorization.

61061015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126001.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 61061015 is about 7814.1547847480. The cubic root of 61061015 is about 393.7809234133.

The spelling of 61061015 in words is "sixty-one million, sixty-one thousand, fifteen".