71669952 has 42 divisors (see below), whose sum is σ = 205430628. Its totient is φ = 23889792.

The previous prime is 71669951. The next prime is 71669953. The reversal of 71669952 is 25996617.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (71669951) and next prime (71669953).

It is a junction number, because it is equal to n+sod(n) for n = 71669898 and 71669907.

It is not an unprimeable number, because it can be changed into a prime (71669951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61638 + ... + 62789.

Almost surely, 2^71669952 is an apocalyptic number.

71669952 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71669952 is an abundant number, since it is smaller than the sum of its proper divisors (133760676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71669952 is a wasteful number, since it uses less digits than its factorization.

71669952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124445 (or 124432 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 71669952 is about 8465.8107703870. The cubic root of 71669952 is about 415.3801172036.

The spelling of 71669952 in words is "seventy-one million, six hundred sixty-nine thousand, nine hundred fifty-two".