70661001 has 8 divisors (see below), whose sum is σ = 94431040. Its totient is φ = 46999152.

The previous prime is 70660979. The next prime is 70661021. The reversal of 70661001 is 10016607.

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

It is not a de Polignac number, because 70661001 - 2⁹ = 70660489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70661021) 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, 25510 + ... + 28143.

It is an arithmetic number, because the mean of its divisors is an integer number (11803880).

Almost surely, 2^70661001 is an apocalyptic number.

It is an amenable number.

70661001 is a deficient number, since it is larger than the sum of its proper divisors (23770039).

70661001 is a wasteful number, since it uses less digits than its factorization.

70661001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54095.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 70661001 is about 8406.0098144125. The cubic root of 70661001 is about 413.4216936629.

Adding to 70661001 its reverse (10016607), we get a palindrome (80677608).

The spelling of 70661001 in words is "seventy million, six hundred sixty-one thousand, one".