77893601 has 4 divisors (see below), whose sum is σ = 78768900. Its totient is φ = 77018304.

The previous prime is 77893579. The next prime is 77893631. The reversal of 77893601 is 10639877.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10639877 = 43 ⋅247439.

It can be written as a sum of positive squares in 2 ways, for example, as 16192576 + 61701025 = 4024^2 + 7855^2 .

It is a cyclic number.

It is not a de Polignac number, because 77893601 - 2¹⁸ = 77631457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77893631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 437516 + ... + 437693.

It is an arithmetic number, because the mean of its divisors is an integer number (19692225).

Almost surely, 2^77893601 is an apocalyptic number.

It is an amenable number.

77893601 is a deficient number, since it is larger than the sum of its proper divisors (875299).

77893601 is an equidigital number, since it uses as much as digits as its factorization.

77893601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875298.

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

The square root of 77893601 is about 8825.7351535155. The cubic root of 77893601 is about 427.0715034365.

The spelling of 77893601 in words is "seventy-seven million, eight hundred ninety-three thousand, six hundred one".