70666607 has 4 divisors (see below), whose sum is σ = 77090856. Its totient is φ = 64242360.

The previous prime is 70666579. The next prime is 70666613.

70666607 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70666607 - 2²² = 66472303 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 (70666007) 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, 3212108 + ... + 3212129.

It is an arithmetic number, because the mean of its divisors is an integer number (19272714).

Almost surely, 2^70666607 is an apocalyptic number.

70666607 is a deficient number, since it is larger than the sum of its proper divisors (6424249).

70666607 is a wasteful number, since it uses less digits than its factorization.

70666607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6424248.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 70666607 is about 8406.3432597057. The cubic root of 70666607 is about 413.4326265240.

The spelling of 70666607 in words is "seventy million, six hundred sixty-six thousand, six hundred seven".