657048641 has 8 divisors (see below), whose sum is σ = 668424960. Its totient is φ = 645761248.

The previous prime is 657048593. The next prime is 657048647. The reversal of 657048641 is 146840756.

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 657048641 - 2⁶ = 657048577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (657048647) 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, 7241 + ... + 36966.

It is an arithmetic number, because the mean of its divisors is an integer number (83553120).

Almost surely, 2^657048641 is an apocalyptic number.

It is an amenable number.

657048641 is a deficient number, since it is larger than the sum of its proper divisors (11376319).

657048641 is a wasteful number, since it uses less digits than its factorization.

657048641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44463.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 657048641 is about 25632.9600514650. The cubic root of 657048641 is about 869.3590386194.

The spelling of 657048641 in words is "six hundred fifty-seven million, forty-eight thousand, six hundred forty-one".