340420077 has 20 divisors (see below), whose sum is σ = 516872796. Its totient is φ = 223223040.

The previous prime is 340420063. The next prime is 340420081. The reversal of 340420077 is 770024043.

It can be written as a sum of positive squares in 2 ways, for example, as 69455556 + 270964521 = 8334^2 + 16461^2 .

It is not a de Polignac number, because 340420077 - 2⁴ = 340420061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 340420077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340420027) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29508 + ... + 39389.

Almost surely, 2^340420077 is an apocalyptic number.

It is an amenable number.

340420077 is a deficient number, since it is larger than the sum of its proper divisors (176452719).

340420077 is an equidigital number, since it uses as much as digits as its factorization.

340420077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68970 (or 68961 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 340420077 is about 18450.4763353145. The cubic root of 340420077 is about 698.2405315753.

The spelling of 340420077 in words is "three hundred forty million, four hundred twenty thousand, seventy-seven".