1964657 has 8 divisors (see below), whose sum is σ = 2108160. Its totient is φ = 1825200.

The previous prime is 1964629. The next prime is 1964659. The reversal of 1964657 is 7564691.

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 1964657 - 2⁶ = 1964593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1964657.

It is not an unprimeable number, because it can be changed into a prime (1964659) 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, 32 + ... + 1982.

It is an arithmetic number, because the mean of its divisors is an integer number (263520).

2^1964657 is an apocalyptic number.

It is an amenable number.

1964657 is a deficient number, since it is larger than the sum of its proper divisors (143503).

1964657 is a wasteful number, since it uses less digits than its factorization.

1964657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023.

The product of its digits is 45360, while the sum is 38.

The square root of 1964657 is about 1401.6622274999. The cubic root of 1964657 is about 125.2455333910.

The spelling of 1964657 in words is "one million, nine hundred sixty-four thousand, six hundred fifty-seven".