65406705 has 32 divisors (see below), whose sum is σ = 128803584. Its totient is φ = 27599616.

The previous prime is 65406697. The next prime is 65406743. The reversal of 65406705 is 50760456.

It is not a de Polignac number, because 65406705 - 2³ = 65406697 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22594 + ... + 25323.

It is an arithmetic number, because the mean of its divisors is an integer number (4025112).

Almost surely, 2^65406705 is an apocalyptic number.

65406705 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65406705 is a deficient number, since it is larger than the sum of its proper divisors (63396879).

65406705 is a wasteful number, since it uses less digits than its factorization.

65406705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47945.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 65406705 is about 8087.4411898944. The cubic root of 65406705 is about 402.9094222646.

The spelling of 65406705 in words is "sixty-five million, four hundred six thousand, seven hundred five".