306220077 has 24 divisors (see below), whose sum is σ = 472343040. Its totient is φ = 190743840.

The previous prime is 306220073. The next prime is 306220081. The reversal of 306220077 is 770022603.

306220077 is a `hidden beast` number, since 30 + 622 + 0 + 0 + 7 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (306220073) and next prime (306220081).

It is not a de Polignac number, because 306220077 - 2² = 306220073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 306220077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (306220073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10833 + ... + 27014.

It is an arithmetic number, because the mean of its divisors is an integer number (19680960).

Almost surely, 2^306220077 is an apocalyptic number.

It is an amenable number.

306220077 is a deficient number, since it is larger than the sum of its proper divisors (166122963).

306220077 is a wasteful number, since it uses less digits than its factorization.

306220077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37913 (or 37910 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 306220077 is about 17499.1450362582. The cubic root of 306220077 is about 674.0279209289.

The spelling of 306220077 in words is "three hundred six million, two hundred twenty thousand, seventy-seven".