70548661 has 4 divisors (see below), whose sum is σ = 70574400. Its totient is φ = 70522924.

The previous prime is 70548637. The next prime is 70548679. The reversal of 70548661 is 16684507.

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: 16684507 = 7 ⋅2383501.

It is a cyclic number.

It is not a de Polignac number, because 70548661 - 2⁵ = 70548629 is a prime.

It is a super-2 number, since 2×70548661² = 9954227137785842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70548661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70548761) 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, 8191 + ... + 14428.

It is an arithmetic number, because the mean of its divisors is an integer number (17643600).

Almost surely, 2^70548661 is an apocalyptic number.

It is an amenable number.

70548661 is a deficient number, since it is larger than the sum of its proper divisors (25739).

70548661 is a wasteful number, since it uses less digits than its factorization.

70548661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25738.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 70548661 is about 8399.3250324059. The cubic root of 70548661 is about 413.2024853916.

The spelling of 70548661 in words is "seventy million, five hundred forty-eight thousand, six hundred sixty-one".