1968457 has 8 divisors (see below), whose sum is σ = 2084960. Its totient is φ = 1853280.

The previous prime is 1968427. The next prime is 1968467. The reversal of 1968457 is 7548691.

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

It is a cyclic number.

It is not a de Polignac number, because 1968457 - 2¹¹ = 1966409 is a prime.

It is a Duffinian number.

1968457 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1968427) 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, 5782 + ... + 6112.

It is an arithmetic number, because the mean of its divisors is an integer number (260620).

2^1968457 is an apocalyptic number.

It is an amenable number.

1968457 is a deficient number, since it is larger than the sum of its proper divisors (116503).

1968457 is a wasteful number, since it uses less digits than its factorization.

1968457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its digits is 60480, while the sum is 40.

The square root of 1968457 is about 1403.0171060967. The cubic root of 1968457 is about 125.3262305152.

The spelling of 1968457 in words is "one million, nine hundred sixty-eight thousand, four hundred fifty-seven".