70664472 has 24 divisors (see below), whose sum is σ = 191383140. Its totient is φ = 23554800.

The previous prime is 70664471. The next prime is 70664497. The reversal of 70664472 is 27446607.

70664472 is a `hidden beast` number, since 7 + 0 + 6 + 644 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70664471) 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, 490654 + ... + 490797.

Almost surely, 2^70664472 is an apocalyptic number.

70664472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70664472 is an abundant number, since it is smaller than the sum of its proper divisors (120718668).

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

70664472 is a wasteful number, since it uses less digits than its factorization.

70664472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981463 (or 981456 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 70664472 is about 8406.2162713078. The cubic root of 70664472 is about 413.4284629000.

The spelling of 70664472 in words is "seventy million, six hundred sixty-four thousand, four hundred seventy-two".