340388765 has 8 divisors (see below), whose sum is σ = 418429368. Its totient is φ = 265669120.

The previous prime is 340388749. The next prime is 340388767. The reversal of 340388765 is 567883043.

It can be written as a sum of positive squares in 4 ways, for example, as 6120676 + 334268089 = 2474^2 + 18283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340388765 - 2⁴ = 340388749 is a prime.

It is a super-2 number, since 2×340388765² = 231729022676450450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340388767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830012 + ... + 830421.

It is an arithmetic number, because the mean of its divisors is an integer number (52303671).

Almost surely, 2^340388765 is an apocalyptic number.

It is an amenable number.

340388765 is a deficient number, since it is larger than the sum of its proper divisors (78040603).

340388765 is a wasteful number, since it uses less digits than its factorization.

340388765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660479.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 340388765 is about 18449.6277740230. The cubic root of 340388765 is about 698.2191227539.

The spelling of 340388765 in words is "three hundred forty million, three hundred eighty-eight thousand, seven hundred sixty-five".