1706242649 has 8 divisors (see below), whose sum is σ = 1781465280. Its totient is φ = 1631106576.

The previous prime is 1706242633. The next prime is 1706242667. The reversal of 1706242649 is 9462426071.

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 1706242649 - 2⁴ = 1706242633 is a prime.

It is a super-2 number, since 2×1706242649² = 5822527954533074402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1706242609) 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, 20414 + ... + 61880.

It is an arithmetic number, because the mean of its divisors is an integer number (222683160).

Almost surely, 2^1706242649 is an apocalyptic number.

It is an amenable number.

1706242649 is a deficient number, since it is larger than the sum of its proper divisors (75222631).

1706242649 is a wasteful number, since it uses less digits than its factorization.

1706242649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43279.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1706242649 is about 41306.6901239981. The cubic root of 1706242649 is about 1194.9422890729.

The spelling of 1706242649 in words is "one billion, seven hundred six million, two hundred forty-two thousand, six hundred forty-nine".