340662493 has 4 divisors (see below), whose sum is σ = 342918688. Its totient is φ = 338406300.

The previous prime is 340662479. The next prime is 340662521. The reversal of 340662493 is 394266043.

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, and also an emirpimes, since its reverse is a distinct semiprime: 394266043 = 37 ⋅10655839.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340662493 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 (340662433) 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, 1127871 + ... + 1128172.

It is an arithmetic number, because the mean of its divisors is an integer number (85729672).

Almost surely, 2^340662493 is an apocalyptic number.

It is an amenable number.

340662493 is a deficient number, since it is larger than the sum of its proper divisors (2256195).

340662493 is a wasteful number, since it uses less digits than its factorization.

340662493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256194.

The product of its (nonzero) digits is 93312, while the sum is 37.

The square root of 340662493 is about 18457.0445358947. The cubic root of 340662493 is about 698.4062332341.

The spelling of 340662493 in words is "three hundred forty million, six hundred sixty-two thousand, four hundred ninety-three".