64272797 has 2 divisors, whose sum is σ = 64272798. Its totient is φ = 64272796.

The previous prime is 64272781. The next prime is 64272809. The reversal of 64272797 is 79727246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61795321 + 2477476 = 7861^2 + 1574^2 .

It is a cyclic number.

It is not a de Polignac number, because 64272797 - 2⁴ = 64272781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64272727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32136398 + 32136399.

It is an arithmetic number, because the mean of its divisors is an integer number (32136399).

Almost surely, 2^64272797 is an apocalyptic number.

It is an amenable number.

64272797 is a deficient number, since it is larger than the sum of its proper divisors (1).

64272797 is an equidigital number, since it uses as much as digits as its factorization.

64272797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 64272797 is about 8017.0316826117. The cubic root of 64272797 is about 400.5675215009.

The spelling of 64272797 in words is "sixty-four million, two hundred seventy-two thousand, seven hundred ninety-seven".