61787011 has 16 divisors (see below), whose sum is σ = 72817920. Its totient is φ = 51685920.

The previous prime is 61787009. The next prime is 61787017. The reversal of 61787011 is 11078716.

It is not a de Polignac number, because 61787011 - 2¹ = 61787009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61787017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71500 + ... + 72358.

It is an arithmetic number, because the mean of its divisors is an integer number (4551120).

Almost surely, 2^61787011 is an apocalyptic number.

61787011 is a deficient number, since it is larger than the sum of its proper divisors (11030909).

61787011 is a wasteful number, since it uses less digits than its factorization.

61787011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 61787011 is about 7860.4714235216. The cubic root of 61787011 is about 395.3354219738.

The spelling of 61787011 in words is "sixty-one million, seven hundred eighty-seven thousand, eleven".