307220077 has 4 divisors (see below), whose sum is σ = 307276960. Its totient is φ = 307163196.

The previous prime is 307220051. The next prime is 307220099. The reversal of 307220077 is 770022703.

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 307220077 - 2²³ = 298831469 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 (307220377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19377 + ... + 31462.

It is an arithmetic number, because the mean of its divisors is an integer number (76819240).

Almost surely, 2^307220077 is an apocalyptic number.

It is an amenable number.

307220077 is a deficient number, since it is larger than the sum of its proper divisors (56883).

307220077 is an equidigital number, since it uses as much as digits as its factorization.

307220077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56882.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 307220077 is about 17527.6945717342. The cubic root of 307220077 is about 674.7608312247.

The spelling of 307220077 in words is "three hundred seven million, two hundred twenty thousand, seventy-seven".