6506345402 has 16 divisors (see below), whose sum is σ = 10286549640. Its totient is φ = 3081728832.

The previous prime is 6506345393. The next prime is 6506345449. The reversal of 6506345402 is 2045436056.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4873296481 + 1633048921 = 69809^2 + 40411^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1055213 + ... + 1061360.

Almost surely, 2^6506345402 is an apocalyptic number.

6506345402 is a deficient number, since it is larger than the sum of its proper divisors (3780204238).

6506345402 is a wasteful number, since it uses less digits than its factorization.

6506345402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2116657.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 6506345402 is about 80661.9203961820. The cubic root of 6506345402 is about 1866.8626702278.

The spelling of 6506345402 in words is "six billion, five hundred six million, three hundred forty-five thousand, four hundred two".