77693801 has 4 divisors (see below), whose sum is σ = 77850000. Its totient is φ = 77537604.

The previous prime is 77693797. The next prime is 77693857. The reversal of 77693801 is 10839677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10839677 = 31 ⋅349667.

It is a cyclic number.

It is not a de Polignac number, because 77693801 - 2² = 77693797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77653801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77351 + ... + 78348.

It is an arithmetic number, because the mean of its divisors is an integer number (19462500).

Almost surely, 2^77693801 is an apocalyptic number.

It is an amenable number.

77693801 is a deficient number, since it is larger than the sum of its proper divisors (156199).

77693801 is a wasteful number, since it uses less digits than its factorization.

77693801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156198.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 77693801 is about 8814.4087152798. The cubic root of 77693801 is about 426.7060393218.

The spelling of 77693801 in words is "seventy-seven million, six hundred ninety-three thousand, eight hundred one".