77707097 has 4 divisors (see below), whose sum is σ = 83684580. Its totient is φ = 71729616.

The previous prime is 77707061. The next prime is 77707099. The reversal of 77707097 is 79070777.

It is a happy number.

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 31181056 + 46526041 = 5584^2 + 6821^2 .

It is a cyclic number.

It is not a de Polignac number, because 77707097 - 2⁶ = 77707033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77707099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2988722 + ... + 2988747.

It is an arithmetic number, because the mean of its divisors is an integer number (20921145).

Almost surely, 2^77707097 is an apocalyptic number.

It is an amenable number.

77707097 is a deficient number, since it is larger than the sum of its proper divisors (5977483).

77707097 is a wasteful number, since it uses less digits than its factorization.

77707097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5977482.

The product of its (nonzero) digits is 151263, while the sum is 44.

The square root of 77707097 is about 8815.1629026354. The cubic root of 77707097 is about 426.7303791439.

The spelling of 77707097 in words is "seventy-seven million, seven hundred seven thousand, ninety-seven".