65656697 has 8 divisors (see below), whose sum is σ = 69970176. Its totient is φ = 61464832.

The previous prime is 65656687. The next prime is 65656709. The reversal of 65656697 is 79665656.

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

It is not a de Polignac number, because 65656697 - 2¹⁶ = 65591161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65656607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29288 + ... + 31449.

It is an arithmetic number, because the mean of its divisors is an integer number (8746272).

Almost surely, 2^65656697 is an apocalyptic number.

It is an amenable number.

65656697 is a deficient number, since it is larger than the sum of its proper divisors (4313479).

65656697 is a wasteful number, since it uses less digits than its factorization.

65656697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60807.

The product of its digits is 2041200, while the sum is 50.

The square root of 65656697 is about 8102.8820181464. The cubic root of 65656697 is about 403.4220918125.

The spelling of 65656697 in words is "sixty-five million, six hundred fifty-six thousand, six hundred ninety-seven".