61771516 has 12 divisors (see below), whose sum is σ = 108613960. Its totient is φ = 30738960.

The previous prime is 61771513. The next prime is 61771529. The reversal of 61771516 is 61517716.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61771513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 35751 + ... + 37438.

Almost surely, 2^61771516 is an apocalyptic number.

It is an amenable number.

61771516 is a deficient number, since it is larger than the sum of its proper divisors (46842444).

61771516 is a wasteful number, since it uses less digits than its factorization.

61771516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73404 (or 73402 counting only the distinct ones).

The product of its digits is 8820, while the sum is 34.

The square root of 61771516 is about 7859.4857338124. The cubic root of 61771516 is about 395.3023716913.

The spelling of 61771516 in words is "sixty-one million, seven hundred seventy-one thousand, five hundred sixteen".