5645423402 has 8 divisors (see below), whose sum is σ = 8483019300. Its totient is φ = 2817750304.

The previous prime is 5645423401. The next prime is 5645423411. The reversal of 5645423402 is 2043245465.

It can be written as a sum of positive squares in 2 ways, for example, as 5605367161 + 40056241 = 74869^2 + 6329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5645423401) 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, 2479277 + ... + 2481552.

Almost surely, 2^5645423402 is an apocalyptic number.

5645423402 is a deficient number, since it is larger than the sum of its proper divisors (2837595898).

5645423402 is a wasteful number, since it uses less digits than its factorization.

5645423402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961400.

The product of its (nonzero) digits is 115200, while the sum is 35.

The square root of 5645423402 is about 75136.0326474588. The cubic root of 5645423402 is about 1780.5964631975.

Adding to 5645423402 its reverse (2043245465), we get a palindrome (7688668867).

The spelling of 5645423402 in words is "five billion, six hundred forty-five million, four hundred twenty-three thousand, four hundred two".