61008615 has 48 divisors (see below), whose sum is σ = 110990880. Its totient is φ = 30965760.

The previous prime is 61008613. The next prime is 61008643. The reversal of 61008615 is 51680016.

It is not a de Polignac number, because 61008615 - 2¹ = 61008613 is a prime.

It is a super-2 number, since 2×61008615² = 7444102208436450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61008611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78951 + ... + 79719.

It is an arithmetic number, because the mean of its divisors is an integer number (2312310).

Almost surely, 2^61008615 is an apocalyptic number.

61008615 is a deficient number, since it is larger than the sum of its proper divisors (49982265).

61008615 is a wasteful number, since it uses less digits than its factorization.

61008615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 861 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 61008615 is about 7810.8011752957. The cubic root of 61008615 is about 393.6682490899.

The spelling of 61008615 in words is "sixty-one million, eight thousand, six hundred fifteen".