653436997 has 8 divisors (see below), whose sum is σ = 666536000. Its totient is φ = 640436544.

The previous prime is 653436991. The next prime is 653437067. The reversal of 653436997 is 799634356.

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

It is a cyclic number.

It is not a de Polignac number, because 653436997 - 2⁷ = 653436869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653436991) 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, 11172 + ... + 37837.

It is an arithmetic number, because the mean of its divisors is an integer number (83317000).

Almost surely, 2^653436997 is an apocalyptic number.

653436997 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

653436997 is a deficient number, since it is larger than the sum of its proper divisors (13099003).

653436997 is a wasteful number, since it uses less digits than its factorization.

653436997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49275.

The product of its digits is 3674160, while the sum is 52.

The square root of 653436997 is about 25562.4137553557. The cubic root of 653436997 is about 867.7632227555.

The spelling of 653436997 in words is "six hundred fifty-three million, four hundred thirty-six thousand, nine hundred ninety-seven".