61016615 has 8 divisors (see below), whose sum is σ = 79876368. Its totient is φ = 44375680.

The previous prime is 61016603. The next prime is 61016617. The reversal of 61016615 is 51661016.

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

It is not a de Polignac number, because 61016615 - 2¹⁴ = 61000231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61016617) 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, 554642 + ... + 554751.

It is an arithmetic number, because the mean of its divisors is an integer number (9984546).

Almost surely, 2^61016615 is an apocalyptic number.

61016615 is a deficient number, since it is larger than the sum of its proper divisors (18859753).

61016615 is a wasteful number, since it uses less digits than its factorization.

61016615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109409.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61016615 is about 7811.3132698670. The cubic root of 61016615 is about 393.6854554486.

The spelling of 61016615 in words is "sixty-one million, sixteen thousand, six hundred fifteen".