397801066828306 has 4 divisors (see below), whose sum is σ = 596701600242462. Its totient is φ = 198900533414152.

The previous prime is 397801066828303. The next prime is 397801066828391. The reversal of 397801066828306 is 603828660108793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 283649898764281 + 114151168064025 = 16841909^2 + 10684155^2 .

It is not an unprimeable number, because it can be changed into a prime (397801066828303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99450266707075 + ... + 99450266707078.

Almost surely, 2^{397801066828306} is an apocalyptic number.

397801066828306 is a deficient number, since it is larger than the sum of its proper divisors (198900533414156).

397801066828306 is a wasteful number, since it uses less digits than its factorization.

397801066828306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198900533414155.

The product of its (nonzero) digits is 125411328, while the sum is 67.

The spelling of 397801066828306 in words is "three hundred ninety-seven trillion, eight hundred one billion, sixty-six million, eight hundred twenty-eight thousand, three hundred six".