64905461 has 2 divisors, whose sum is σ = 64905462. Its totient is φ = 64905460.

The previous prime is 64905457. The next prime is 64905479. The reversal of 64905461 is 16450946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55965361 + 8940100 = 7481^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 64905461 - 2² = 64905457 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64905961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32452730 + 32452731.

It is an arithmetic number, because the mean of its divisors is an integer number (32452731).

Almost surely, 2^64905461 is an apocalyptic number.

It is an amenable number.

64905461 is a deficient number, since it is larger than the sum of its proper divisors (1).

64905461 is an equidigital number, since it uses as much as digits as its factorization.

64905461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 64905461 is about 8056.3925549839. The cubic root of 64905461 is about 401.8775503064.

The spelling of 64905461 in words is "sixty-four million, nine hundred five thousand, four hundred sixty-one".