77060993 has 8 divisors (see below), whose sum is σ = 79095528. Its totient is φ = 75048064.

The previous prime is 77060989. The next prime is 77060999. The reversal of 77060993 is 39906077.

It can be written as a sum of positive squares in 4 ways, for example, as 49098049 + 27962944 = 7007^2 + 5288^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77060993 - 2² = 77060989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77060993.

It is not an unprimeable number, because it can be changed into a prime (77060999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (9886941).

Almost surely, 2^77060993 is an apocalyptic number.

It is an amenable number.

77060993 is a deficient number, since it is larger than the sum of its proper divisors (2034535).

77060993 is a wasteful number, since it uses less digits than its factorization.

77060993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10803.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 77060993 is about 8778.4390981541. The cubic root of 77060993 is about 425.5443875110.

The spelling of 77060993 in words is "seventy-seven million, sixty thousand, nine hundred ninety-three".