65456949 has 4 divisors (see below), whose sum is σ = 87275936. Its totient is φ = 43637964.

The previous prime is 65456939. The next prime is 65456971. The reversal of 65456949 is 94965456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65456949 - 2⁴ = 65456933 is a prime.

It is a super-2 number, since 2×65456949² = 8569224344777202, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65456898 and 65456907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65456939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10909489 + ... + 10909494.

It is an arithmetic number, because the mean of its divisors is an integer number (21818984).

Almost surely, 2^65456949 is an apocalyptic number.

It is an amenable number.

65456949 is a deficient number, since it is larger than the sum of its proper divisors (21818987).

65456949 is a wasteful number, since it uses less digits than its factorization.

65456949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21818986.

The product of its digits is 1166400, while the sum is 48.

The square root of 65456949 is about 8090.5468912800. The cubic root of 65456949 is about 403.0125645934.

The spelling of 65456949 in words is "sixty-five million, four hundred fifty-six thousand, nine hundred forty-nine".