65723601 has 4 divisors (see below), whose sum is σ = 87631472. Its totient is φ = 43815732.

The previous prime is 65723587. The next prime is 65723639. The reversal of 65723601 is 10632756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65723601 - 2⁵ = 65723569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65723101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10953931 + ... + 10953936.

It is an arithmetic number, because the mean of its divisors is an integer number (21907868).

Almost surely, 2^65723601 is an apocalyptic number.

It is an amenable number.

65723601 is a deficient number, since it is larger than the sum of its proper divisors (21907871).

65723601 is a wasteful number, since it uses less digits than its factorization.

65723601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21907870.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 65723601 is about 8107.0093746091. The cubic root of 65723601 is about 403.5590739752.

The spelling of 65723601 in words is "sixty-five million, seven hundred twenty-three thousand, six hundred one".