3506426657 has 4 divisors (see below), whose sum is σ = 3510153876. Its totient is φ = 3502699440.

The previous prime is 3506426617. The next prime is 3506426683. The reversal of 3506426657 is 7566246053.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7566246053 = 83 ⋅91159591.

It can be written as a sum of positive squares in 2 ways, for example, as 1286226496 + 2220200161 = 35864^2 + 47119^2 .

It is a cyclic number.

It is not a de Polignac number, because 3506426657 - 2⁸ = 3506426401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3506426617) 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, 1862198 + ... + 1864079.

It is an arithmetic number, because the mean of its divisors is an integer number (877538469).

Almost surely, 2^3506426657 is an apocalyptic number.

It is an amenable number.

3506426657 is a deficient number, since it is larger than the sum of its proper divisors (3727219).

3506426657 is an equidigital number, since it uses as much as digits as its factorization.

3506426657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3727218.

The product of its (nonzero) digits is 907200, while the sum is 44.

The square root of 3506426657 is about 59215.0880857236. The cubic root of 3506426657 is about 1519.2232089602.

The spelling of 3506426657 in words is "three billion, five hundred six million, four hundred twenty-six thousand, six hundred fifty-seven".