797640005 has 8 divisors (see below), whose sum is σ = 964475424. Its totient is φ = 633240400.

The previous prime is 797639987. The next prime is 797640029. The reversal of 797640005 is 500046797.

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

It is not a de Polignac number, because 797640005 - 2⁸ = 797639749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608231 + ... + 609540.

It is an arithmetic number, because the mean of its divisors is an integer number (120559428).

Almost surely, 2^797640005 is an apocalyptic number.

It is an amenable number.

797640005 is a deficient number, since it is larger than the sum of its proper divisors (166835419).

797640005 is a wasteful number, since it uses less digits than its factorization.

797640005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217907.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 797640005 is about 28242.5212224405. The cubic root of 797640005 is about 927.4040237507.

The spelling of 797640005 in words is "seven hundred ninety-seven million, six hundred forty thousand, five".