6470432557 has 2 divisors, whose sum is σ = 6470432558. Its totient is φ = 6470432556.

The previous prime is 6470432533. The next prime is 6470432593. The reversal of 6470432557 is 7552340746.

6470432557 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5343756201 + 1126676356 = 73101^2 + 33566^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6470432557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6470432357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235216278 + 3235216279.

It is an arithmetic number, because the mean of its divisors is an integer number (3235216279).

Almost surely, 2^6470432557 is an apocalyptic number.

It is an amenable number.

6470432557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6470432557 is an equidigital number, since it uses as much as digits as its factorization.

6470432557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 43.

The square root of 6470432557 is about 80438.9989805940. The cubic root of 6470432557 is about 1863.4215124383.

The spelling of 6470432557 in words is "six billion, four hundred seventy million, four hundred thirty-two thousand, five hundred fifty-seven".