77813283 has 4 divisors (see below), whose sum is σ = 103751048. Its totient is φ = 51875520.

The previous prime is 77813279. The next prime is 77813287. The reversal of 77813283 is 38231877.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (77813279) and next prime (77813287).

It is not a de Polignac number, because 77813283 - 2² = 77813279 is a prime.

It is a super-2 number, since 2×77813283² = 12109814022476178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77813287) 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, 12968878 + ... + 12968883.

It is an arithmetic number, because the mean of its divisors is an integer number (25937762).

Almost surely, 2^77813283 is an apocalyptic number.

77813283 is a deficient number, since it is larger than the sum of its proper divisors (25937765).

77813283 is a wasteful number, since it uses less digits than its factorization.

77813283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25937764.

The product of its digits is 56448, while the sum is 39.

The square root of 77813283 is about 8821.1837640988. The cubic root of 77813283 is about 426.9246649926.

The spelling of 77813283 in words is "seventy-seven million, eight hundred thirteen thousand, two hundred eighty-three".