340658401 has 4 divisors (see below), whose sum is σ = 347085972. Its totient is φ = 334230832.

The previous prime is 340658399. The next prime is 340658407. The reversal of 340658401 is 104856043.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104856043 = 31 ⋅3382453.

It can be written as a sum of positive squares in 2 ways, for example, as 84658401 + 256000000 = 9201^2 + 16000^2 .

It is a cyclic number.

It is not a de Polignac number, because 340658401 - 2¹ = 340658399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340658407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213706 + ... + 3213811.

It is an arithmetic number, because the mean of its divisors is an integer number (86771493).

Almost surely, 2^340658401 is an apocalyptic number.

It is an amenable number.

340658401 is a deficient number, since it is larger than the sum of its proper divisors (6427571).

340658401 is an equidigital number, since it uses as much as digits as its factorization.

340658401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6427570.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 340658401 is about 18456.9336835781. The cubic root of 340658401 is about 698.4034368302.

The spelling of 340658401 in words is "three hundred forty million, six hundred fifty-eight thousand, four hundred one".