340626457 has 8 divisors (see below), whose sum is σ = 342371016. Its totient is φ = 338886912.

The previous prime is 340626427. The next prime is 340626463. The reversal of 340626457 is 754626043.

It can be written as a sum of positive squares in 4 ways, for example, as 188128656 + 152497801 = 13716^2 + 12349^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340626457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340626427) 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, 227403 + ... + 228895.

It is an arithmetic number, because the mean of its divisors is an integer number (42796377).

Almost surely, 2^340626457 is an apocalyptic number.

It is an amenable number.

340626457 is a deficient number, since it is larger than the sum of its proper divisors (1744559).

340626457 is a wasteful number, since it uses less digits than its factorization.

340626457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 340626457 is about 18456.0682974462. The cubic root of 340626457 is about 698.3816060688.

The spelling of 340626457 in words is "three hundred forty million, six hundred twenty-six thousand, four hundred fifty-seven".