61007886 has 24 divisors (see below), whose sum is σ = 134048304. Its totient is φ = 20049120.

The previous prime is 61007873. The next prime is 61007887. The reversal of 61007886 is 68870016.

It is a self number, because there is not a number n which added to its sum of digits gives 61007886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61007887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22591 + ... + 25146.

It is an arithmetic number, because the mean of its divisors is an integer number (5585346).

Almost surely, 2^61007886 is an apocalyptic number.

61007886 is an abundant number, since it is smaller than the sum of its proper divisors (73040418).

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

61007886 is a wasteful number, since it uses less digits than its factorization.

61007886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47816 (or 47813 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 61007886 is about 7810.7545090087. The cubic root of 61007886 is about 393.6666810857. Note that the first 4 decimals are identical.

The spelling of 61007886 in words is "sixty-one million, seven thousand, eight hundred eighty-six".