70860661 has 4 divisors (see below), whose sum is σ = 72775852. Its totient is φ = 68945472.

The previous prime is 70860619. The next prime is 70860683. The reversal of 70860661 is 16606807.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27102436 + 43758225 = 5206^2 + 6615^2 .

It is a cyclic number.

It is not a de Polignac number, because 70860661 - 2⁷ = 70860533 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 (70890661) 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, 957540 + ... + 957613.

It is an arithmetic number, because the mean of its divisors is an integer number (18193963).

Almost surely, 2^70860661 is an apocalyptic number.

It is an amenable number.

70860661 is a deficient number, since it is larger than the sum of its proper divisors (1915191).

70860661 is a wasteful number, since it uses less digits than its factorization.

70860661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915190.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 70860661 is about 8417.8774640642. The cubic root of 70860661 is about 413.8107161348.

The spelling of 70860661 in words is "seventy million, eight hundred sixty thousand, six hundred sixty-one".