66926397 has 8 divisors (see below), whose sum is σ = 90025344. Its totient is φ = 44222528.

The previous prime is 66926383. The next prime is 66926401. The reversal of 66926397 is 79362966.

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 66926397 - 2⁴ = 66926381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66926317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98373 + ... + 99050.

It is an arithmetic number, because the mean of its divisors is an integer number (11253168).

Almost surely, 2^66926397 is an apocalyptic number.

It is an amenable number.

66926397 is a deficient number, since it is larger than the sum of its proper divisors (23098947).

66926397 is a wasteful number, since it uses less digits than its factorization.

66926397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197539.

The product of its digits is 734832, while the sum is 48.

The square root of 66926397 is about 8180.8555176094. The cubic root of 66926397 is about 406.0060281244.

The spelling of 66926397 in words is "sixty-six million, nine hundred twenty-six thousand, three hundred ninety-seven".