70561207 has 4 divisors (see below), whose sum is σ = 70622136. Its totient is φ = 70500280.

The previous prime is 70561199. The next prime is 70561213. The reversal of 70561207 is 70216507.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70216507 = 7477 ⋅9391.

It is a cyclic number.

It is not a de Polignac number, because 70561207 - 2³ = 70561199 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 (70561297) 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, 28693 + ... + 31054.

It is an arithmetic number, because the mean of its divisors is an integer number (17655534).

Almost surely, 2^70561207 is an apocalyptic number.

70561207 is a deficient number, since it is larger than the sum of its proper divisors (60929).

70561207 is a wasteful number, since it uses less digits than its factorization.

70561207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60928.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 70561207 is about 8400.0718449309. The cubic root of 70561207 is about 413.2269778532.

The spelling of 70561207 in words is "seventy million, five hundred sixty-one thousand, two hundred seven".