538020664 has 32 divisors (see below), whose sum is σ = 1024002000. Its totient is φ = 264977152.

The previous prime is 538020661. The next prime is 538020667. The reversal of 538020664 is 466020835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (538020661) and next prime (538020667).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538020661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207327 + ... + 209905.

Almost surely, 2^538020664 is an apocalyptic number.

It is an amenable number.

538020664 is a deficient number, since it is larger than the sum of its proper divisors (485981336).

538020664 is a wasteful number, since it uses less digits than its factorization.

538020664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967 (or 2963 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 538020664 is about 23195.2724493592. The cubic root of 538020664 is about 813.3291141649.

The spelling of 538020664 in words is "five hundred thirty-eight million, twenty thousand, six hundred sixty-four".