77233397 has 8 divisors (see below), whose sum is σ = 82085400. Its totient is φ = 72415744.

The previous prime is 77233337. The next prime is 77233433. The reversal of 77233397 is 79333277.

It can be written as a sum of positive squares in 4 ways, for example, as 39601 + 77193796 = 199^2 + 8786^2 .

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 77233397 - 2¹⁰ = 77232373 is a prime.

It is a super-2 number, since 2×77233397² = 11929995224319218, which contains 22 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 (77233337) 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, 3872 + ... + 13017.

It is an arithmetic number, because the mean of its divisors is an integer number (10260675).

Almost surely, 2^77233397 is an apocalyptic number.

It is an amenable number.

77233397 is a deficient number, since it is larger than the sum of its proper divisors (4852003).

77233397 is a wasteful number, since it uses less digits than its factorization.

77233397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17175.

The product of its digits is 166698, while the sum is 41.

The square root of 77233397 is about 8788.2533531982. The cubic root of 77233397 is about 425.8614995694.

The spelling of 77233397 in words is "seventy-seven million, two hundred thirty-three thousand, three hundred ninety-seven".