77001616 has 20 divisors (see below), whose sum is σ = 151081600. Its totient is φ = 38012832.

The previous prime is 77001611. The next prime is 77001629. The reversal of 77001616 is 61610077.

It is a super-2 number, since 2×77001616² = 11858497733222912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (77001611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29196 + ... + 31723.

It is an arithmetic number, because the mean of its divisors is an integer number (7554080).

Almost surely, 2^77001616 is an apocalyptic number.

It is an amenable number.

77001616 is a deficient number, since it is larger than the sum of its proper divisors (74079984).

77001616 is a wasteful number, since it uses less digits than its factorization.

77001616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61006 (or 61000 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 77001616 is about 8775.0564670548. The cubic root of 77001616 is about 425.4350626736.

It can be divided in two parts, 7700 and 1616, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 77001616 in words is "seventy-seven million, one thousand, six hundred sixteen".