65407537 has 8 divisors (see below), whose sum is σ = 70531496. Its totient is φ = 60296832.

The previous prime is 65407523. The next prime is 65407541. The reversal of 65407537 is 73570456.

It can be written as a sum of positive squares in 4 ways, for example, as 104976 + 65302561 = 324^2 + 8081^2 .

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 65407537 - 2¹¹ = 65405489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65407496 and 65407505.

It is not an unprimeable number, because it can be changed into a prime (65407037) 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, 8533 + ... + 14269.

It is an arithmetic number, because the mean of its divisors is an integer number (8816437).

Almost surely, 2^65407537 is an apocalyptic number.

It is an amenable number.

65407537 is a deficient number, since it is larger than the sum of its proper divisors (5123959).

65407537 is a wasteful number, since it uses less digits than its factorization.

65407537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6627.

The product of its (nonzero) digits is 88200, while the sum is 37.

The square root of 65407537 is about 8087.4926275082. The cubic root of 65407537 is about 402.9111306482.

The spelling of 65407537 in words is "sixty-five million, four hundred seven thousand, five hundred thirty-seven".