1070661 has 4 divisors (see below), whose sum is σ = 1427552. Its totient is φ = 713772.

The previous prime is 1070659. The next prime is 1070681. The reversal of 1070661 is 1660701.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1070661 - 2¹ = 1070659 is a prime.

It is a super-2 number, since 2×1070661² = 2292629953842, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1070621) 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, 178441 + ... + 178446.

It is an arithmetic number, because the mean of its divisors is an integer number (356888).

2^1070661 is an apocalyptic number.

It is an amenable number.

1070661 is a deficient number, since it is larger than the sum of its proper divisors (356891).

1070661 is an equidigital number, since it uses as much as digits as its factorization.

1070661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356890.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1070661 is about 1034.7275003594. The cubic root of 1070661 is about 102.3019694249.

The spelling of 1070661 in words is "one million, seventy thousand, six hundred sixty-one".