64699049 has 2 divisors, whose sum is σ = 64699050. Its totient is φ = 64699048.

The previous prime is 64699003. The next prime is 64699057. The reversal of 64699049 is 94099646.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37210000 + 27489049 = 6100^2 + 5243^2 .

It is a cyclic number.

It is not a de Polignac number, because 64699049 - 2²⁰ = 63650473 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 64698994 and 64699012.

It is not a weakly prime, because it can be changed into another prime (64699099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32349524 + 32349525.

It is an arithmetic number, because the mean of its divisors is an integer number (32349525).

Almost surely, 2^64699049 is an apocalyptic number.

It is an amenable number.

64699049 is a deficient number, since it is larger than the sum of its proper divisors (1).

64699049 is an equidigital number, since it uses as much as digits as its factorization.

64699049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 64699049 is about 8043.5719055653. The cubic root of 64699049 is about 401.4510816231.

The spelling of 64699049 in words is "sixty-four million, six hundred ninety-nine thousand, forty-nine".