70665944 has 8 divisors (see below), whose sum is σ = 132498660. Its totient is φ = 35332968.

The previous prime is 70665943. The next prime is 70665983. The reversal of 70665944 is 44956607.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×70665944² = 9987351282822272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70665941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4416614 + ... + 4416629.

Almost surely, 2^70665944 is an apocalyptic number.

It is an amenable number.

70665944 is a deficient number, since it is larger than the sum of its proper divisors (61832716).

70665944 is a wasteful number, since it uses less digits than its factorization.

70665944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8833249 (or 8833245 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 70665944 is about 8406.3038251065. The cubic root of 70665944 is about 413.4313335668.

The spelling of 70665944 in words is "seventy million, six hundred sixty-five thousand, nine hundred forty-four".