1072691 has 4 divisors (see below), whose sum is σ = 1077384. Its totient is φ = 1068000.

The previous prime is 1072657. The next prime is 1072711. The reversal of 1072691 is 1962701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1072691 - 2⁶ = 1072627 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 1072691.

It is not an unprimeable number, because it can be changed into a prime (1072991) 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, 1985 + ... + 2466.

It is an arithmetic number, because the mean of its divisors is an integer number (269346).

2^1072691 is an apocalyptic number.

1072691 is a deficient number, since it is larger than the sum of its proper divisors (4693).

1072691 is an equidigital number, since it uses as much as digits as its factorization.

1072691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 1072691 is about 1035.7079704241. The cubic root of 1072691 is about 102.3665843015.

The spelling of 1072691 in words is "one million, seventy-two thousand, six hundred ninety-one".