5642511698 has 4 divisors (see below), whose sum is σ = 8463767550. Its totient is φ = 2821255848.

The previous prime is 5642511661. The next prime is 5642511703. The reversal of 5642511698 is 8961152465.

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

It can be written as a sum of positive squares in only one way, i.e., 4104067969 + 1538443729 = 64063^2 + 39223^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1410627923 + ... + 1410627926.

Almost surely, 2^5642511698 is an apocalyptic number.

5642511698 is a deficient number, since it is larger than the sum of its proper divisors (2821255852).

5642511698 is a wasteful number, since it uses less digits than its factorization.

5642511698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821255851.

The product of its digits is 518400, while the sum is 47.

The square root of 5642511698 is about 75116.6539324004. The cubic root of 5642511698 is about 1780.2902882620.

The spelling of 5642511698 in words is "five billion, six hundred forty-two million, five hundred eleven thousand, six hundred ninety-eight".