26464621 has 2 divisors, whose sum is σ = 26464622. Its totient is φ = 26464620.

The previous prime is 26464601. The next prime is 26464637. The reversal of 26464621 is 12646462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21288996 + 5175625 = 4614^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 26464621 - 2¹⁹ = 25940333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26464601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13232310 + 13232311.

It is an arithmetic number, because the mean of its divisors is an integer number (13232311).

Almost surely, 2^26464621 is an apocalyptic number.

It is an amenable number.

26464621 is a deficient number, since it is larger than the sum of its proper divisors (1).

26464621 is an equidigital number, since it uses as much as digits as its factorization.

26464621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 31.

The square root of 26464621 is about 5144.3776105570. The cubic root of 26464621 is about 298.0038623886.

The spelling of 26464621 in words is "twenty-six million, four hundred sixty-four thousand, six hundred twenty-one".