70664453 has 4 divisors (see below), whose sum is σ = 72168000. Its totient is φ = 69160908.

The previous prime is 70664353. The next prime is 70664459. The reversal of 70664453 is 35446607.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35446607 = 7 ⋅5063801.

It is a cyclic number.

It is not a de Polignac number, because 70664453 - 2¹² = 70660357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70664459) 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, 751703 + ... + 751796.

It is an arithmetic number, because the mean of its divisors is an integer number (18042000).

Almost surely, 2^70664453 is an apocalyptic number.

It is an amenable number.

70664453 is a deficient number, since it is larger than the sum of its proper divisors (1503547).

70664453 is a wasteful number, since it uses less digits than its factorization.

70664453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503546.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 70664453 is about 8406.2151411917. The cubic root of 70664453 is about 413.4284258463.

It can be divided in two parts, 70664 and 453, that added together give a palindrome (71117).

The spelling of 70664453 in words is "seventy million, six hundred sixty-four thousand, four hundred fifty-three".