70690061 has 8 divisors (see below), whose sum is σ = 77171640. Its totient is φ = 64357632.

The previous prime is 70690043. The next prime is 70690117. The reversal of 70690061 is 16009607.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6786025 + 63904036 = 2605^2 + 7994^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70690061 - 2²² = 66495757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70690861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36296 + ... + 38193.

It is an arithmetic number, because the mean of its divisors is an integer number (9646455).

Almost surely, 2^70690061 is an apocalyptic number.

It is an amenable number.

70690061 is a deficient number, since it is larger than the sum of its proper divisors (6481579).

70690061 is a wasteful number, since it uses less digits than its factorization.

70690061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74575.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 70690061 is about 8407.7381619553. The cubic root of 70690061 is about 413.4783604129.

Adding to 70690061 its reverse (16009607), we get a palindrome (86699668).

The spelling of 70690061 in words is "seventy million, six hundred ninety thousand, sixty-one".