70872001 has 4 divisors (see below), whose sum is σ = 71341504. Its totient is φ = 70402500.

The previous prime is 70871989. The next prime is 70872013. The reversal of 70872001 is 10027807.

It is a happy number.

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.

It is an interprime number because it is at equal distance from previous prime (70871989) and next prime (70872013).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70872001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70872101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234525 + ... + 234826.

It is an arithmetic number, because the mean of its divisors is an integer number (17835376).

Almost surely, 2^70872001 is an apocalyptic number.

It is an amenable number.

70872001 is a deficient number, since it is larger than the sum of its proper divisors (469503).

70872001 is a wasteful number, since it uses less digits than its factorization.

70872001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469502.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 70872001 is about 8418.5510035873. The cubic root of 70872001 is about 413.8327893282.

Adding to 70872001 its reverse (10027807), we get a palindrome (80899808).

The spelling of 70872001 in words is "seventy million, eight hundred seventy-two thousand, one".