66801795 has 16 divisors (see below), whose sum is σ = 107052192. Its totient is φ = 35571200.

The previous prime is 66801793. The next prime is 66801797. The reversal of 66801795 is 59710866.

It is an interprime number because it is at equal distance from previous prime (66801793) and next prime (66801797).

It is not a de Polignac number, because 66801795 - 2¹ = 66801793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66801793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7339 + ... + 13691.

It is an arithmetic number, because the mean of its divisors is an integer number (6690762).

Almost surely, 2^66801795 is an apocalyptic number.

66801795 is a deficient number, since it is larger than the sum of its proper divisors (40250397).

66801795 is a wasteful number, since it uses less digits than its factorization.

66801795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7062.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 66801795 is about 8173.2365070393. The cubic root of 66801795 is about 405.7539074210.

The spelling of 66801795 in words is "sixty-six million, eight hundred one thousand, seven hundred ninety-five".