77743061 has 16 divisors (see below), whose sum is σ = 87160320. Its totient is φ = 68743920.

The previous prime is 77743037. The next prime is 77743067. The reversal of 77743061 is 16034777.

It is a cyclic number.

It is not a de Polignac number, because 77743061 - 2²² = 73548757 is a prime.

It is a super-3 number, since 3×77743061³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77743067) 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, 66266 + ... + 67428.

It is an arithmetic number, because the mean of its divisors is an integer number (5447520).

Almost surely, 2^77743061 is an apocalyptic number.

It is an amenable number.

77743061 is a deficient number, since it is larger than the sum of its proper divisors (9417259).

77743061 is a wasteful number, since it uses less digits than its factorization.

77743061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 24696, while the sum is 35.

The square root of 77743061 is about 8817.2025609033. The cubic root of 77743061 is about 426.7962013788.

The spelling of 77743061 in words is "seventy-seven million, seven hundred forty-three thousand, sixty-one".