340778901 has 4 divisors (see below), whose sum is σ = 454371872. Its totient is φ = 227185932.

The previous prime is 340778873. The next prime is 340778909. The reversal of 340778901 is 109877043.

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.

It is not a de Polignac number, because 340778901 - 2¹¹ = 340776853 is a prime.

It is a super-2 number, since 2×340778901² = 232260518733535602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 340778901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340778909) 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, 56796481 + ... + 56796486.

It is an arithmetic number, because the mean of its divisors is an integer number (113592968).

Almost surely, 2^340778901 is an apocalyptic number.

It is an amenable number.

340778901 is a deficient number, since it is larger than the sum of its proper divisors (113592971).

340778901 is a wasteful number, since it uses less digits than its factorization.

340778901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113592970.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 340778901 is about 18460.1977508368. The cubic root of 340778901 is about 698.4857751226.

The spelling of 340778901 in words is "three hundred forty million, seven hundred seventy-eight thousand, nine hundred one".