664714953 has 48 divisors (see below), whose sum is σ = 1133623296. Its totient is φ = 367390080.

The previous prime is 664714949. The next prime is 664714957. The reversal of 664714953 is 359417466.

It is an interprime number because it is at equal distance from previous prime (664714949) and next prime (664714957).

It is not a de Polignac number, because 664714953 - 2² = 664714949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664714899 and 664714908.

It is not an unprimeable number, because it can be changed into a prime (664714957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 444475 + ... + 445967.

It is an arithmetic number, because the mean of its divisors is an integer number (23617152).

Almost surely, 2^664714953 is an apocalyptic number.

664714953 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

664714953 is a deficient number, since it is larger than the sum of its proper divisors (468908343).

664714953 is a wasteful number, since it uses less digits than its factorization.

664714953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734 (or 1731 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 664714953 is about 25782.0664997979. The cubic root of 664714953 is about 872.7271420070.

The spelling of 664714953 in words is "six hundred sixty-four million, seven hundred fourteen thousand, nine hundred fifty-three".