65402437 has 2 divisors, whose sum is σ = 65402438. Its totient is φ = 65402436.

The previous prime is 65402387. The next prime is 65402443. The reversal of 65402437 is 73420456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 14508481 = 7134^2 + 3809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65402437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65402399 and 65402408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65402497) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32701218 + 32701219.

It is an arithmetic number, because the mean of its divisors is an integer number (32701219).

Almost surely, 2^65402437 is an apocalyptic number.

It is an amenable number.

65402437 is a deficient number, since it is larger than the sum of its proper divisors (1).

65402437 is an equidigital number, since it uses as much as digits as its factorization.

65402437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 65402437 is about 8087.1773196833. The cubic root of 65402437 is about 402.9006583577.

The spelling of 65402437 in words is "sixty-five million, four hundred two thousand, four hundred thirty-seven".