77230061 has 4 divisors (see below), whose sum is σ = 77382300. Its totient is φ = 77077824.

The previous prime is 77230033. The next prime is 77230081. The reversal of 77230061 is 16003277.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45981961 + 31248100 = 6781^2 + 5590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77230061 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 77230061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77230001) 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, 75356 + ... + 76373.

It is an arithmetic number, because the mean of its divisors is an integer number (19345575).

Almost surely, 2^77230061 is an apocalyptic number.

It is an amenable number.

77230061 is a deficient number, since it is larger than the sum of its proper divisors (152239).

77230061 is a wasteful number, since it uses less digits than its factorization.

77230061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152238.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 77230061 is about 8788.0635523419. The cubic root of 77230061 is about 425.8553679628.

The spelling of 77230061 in words is "seventy-seven million, two hundred thirty thousand, sixty-one".