1662056741 has 4 divisors (see below), whose sum is σ = 1668953484. Its totient is φ = 1655160000.

The previous prime is 1662056701. The next prime is 1662056827. The reversal of 1662056741 is 1476502661.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1543704100 + 118352641 = 39290^2 + 10879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1662056741 - 2¹⁴ = 1662040357 is a prime.

It is a super-2 number, since 2×1662056741² = 5524865220607082162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1662056695 and 1662056704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662056701) 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, 3448010 + ... + 3448491.

It is an arithmetic number, because the mean of its divisors is an integer number (417238371).

Almost surely, 2^1662056741 is an apocalyptic number.

It is an amenable number.

1662056741 is a deficient number, since it is larger than the sum of its proper divisors (6896743).

1662056741 is an equidigital number, since it uses as much as digits as its factorization.

1662056741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6896742.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1662056741 is about 40768.3301227804. The cubic root of 1662056741 is about 1184.5369578424.

The spelling of 1662056741 in words is "one billion, six hundred sixty-two million, fifty-six thousand, seven hundred forty-one".