340978654 has 8 divisors (see below), whose sum is σ = 519852888. Its totient is φ = 167694360.

The previous prime is 340978633. The next prime is 340978663. The reversal of 340978654 is 456879043.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397332 + ... + 1397575.

It is an arithmetic number, because the mean of its divisors is an integer number (64981611).

Almost surely, 2^340978654 is an apocalyptic number.

340978654 is a deficient number, since it is larger than the sum of its proper divisors (178874234).

340978654 is a wasteful number, since it uses less digits than its factorization.

340978654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794970.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 340978654 is about 18465.6073282197. The cubic root of 340978654 is about 698.6222246661.

The spelling of 340978654 in words is "three hundred forty million, nine hundred seventy-eight thousand, six hundred fifty-four".