65406697 has 2 divisors, whose sum is σ = 65406698. Its totient is φ = 65406696.

The previous prime is 65406661. The next prime is 65406743. The reversal of 65406697 is 79660456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64384576 + 1022121 = 8024^2 + 1011^2 .

It is a cyclic number.

It is not a de Polignac number, because 65406697 - 2¹⁹ = 64882409 is a prime.

It is not a weakly prime, because it can be changed into another prime (65406617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32703348 + 32703349.

It is an arithmetic number, because the mean of its divisors is an integer number (32703349).

Almost surely, 2^65406697 is an apocalyptic number.

It is an amenable number.

65406697 is a deficient number, since it is larger than the sum of its proper divisors (1).

65406697 is an equidigital number, since it uses as much as digits as its factorization.

65406697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 65406697 is about 8087.4406953003. The cubic root of 65406697 is about 402.9094058378.

The spelling of 65406697 in words is "sixty-five million, four hundred six thousand, six hundred ninety-seven".