352640656 has 20 divisors (see below), whose sum is σ = 723432492. Its totient is φ = 165948416.

The previous prime is 352640653. The next prime is 352640677. The reversal of 352640656 is 656046253.

It can be written as a sum of positive squares in 2 ways, for example, as 296390656 + 56250000 = 17216^2 + 7500^2 .

It is a super-2 number, since 2×352640656² = 248710864528220672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (352640653) 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, 647965 + ... + 648508.

Almost surely, 2^352640656 is an apocalyptic number.

It is an amenable number.

352640656 is an abundant number, since it is smaller than the sum of its proper divisors (370791836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

352640656 is a wasteful number, since it uses less digits than its factorization.

352640656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296498 (or 1296492 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 352640656 is about 18778.7288174679. The cubic root of 352640656 is about 706.4977670790.

The spelling of 352640656 in words is "three hundred fifty-two million, six hundred forty thousand, six hundred fifty-six".