77023493 has 4 divisors (see below), whose sum is σ = 77102208. Its totient is φ = 76944780.

The previous prime is 77023477. The next prime is 77023501. The reversal of 77023493 is 39432077.

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.

It is a cyclic number.

It is not a de Polignac number, because 77023493 - 2⁴ = 77023477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77023403) 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, 37871 + ... + 39852.

It is an arithmetic number, because the mean of its divisors is an integer number (19275552).

Almost surely, 2^77023493 is an apocalyptic number.

It is an amenable number.

77023493 is a deficient number, since it is larger than the sum of its proper divisors (78715).

77023493 is an equidigital number, since it uses as much as digits as its factorization.

77023493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78714.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 77023493 is about 8776.3029232132. The cubic root of 77023493 is about 425.4753491076.

The spelling of 77023493 in words is "seventy-seven million, twenty-three thousand, four hundred ninety-three".