1970657 has 16 divisors (see below), whose sum is σ = 2317392. Its totient is φ = 1658880.

The previous prime is 1970641. The next prime is 1970677. The reversal of 1970657 is 7560791.

1970657 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 8 ways, for example, as 185761 + 1784896 = 431^2 + 1336^2 .

It is a cyclic number.

It is not a de Polignac number, because 1970657 - 2⁴ = 1970641 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8057 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (144837).

2^1970657 is an apocalyptic number.

1970657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1970657 is a deficient number, since it is larger than the sum of its proper divisors (346735).

1970657 is a wasteful number, since it uses less digits than its factorization.

1970657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308.

The product of its (nonzero) digits is 13230, while the sum is 35.

The square root of 1970657 is about 1403.8009118105. The cubic root of 1970657 is about 125.3729024439.

The spelling of 1970657 in words is "one million, nine hundred seventy thousand, six hundred fifty-seven".