70840551 has 8 divisors (see below), whose sum is σ = 94493824. Its totient is φ = 47207160.

The previous prime is 70840543. The next prime is 70840577. The reversal of 70840551 is 15504807.

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

It is not a de Polignac number, because 70840551 - 2³ = 70840543 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 (70840501) 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, 8790 + ... + 14796.

It is an arithmetic number, because the mean of its divisors is an integer number (11811728).

Almost surely, 2^70840551 is an apocalyptic number.

70840551 is a deficient number, since it is larger than the sum of its proper divisors (23653273).

70840551 is a wasteful number, since it uses less digits than its factorization.

70840551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9941.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 70840551 is about 8416.6828976741. The cubic root of 70840551 is about 413.7715664349.

The spelling of 70840551 in words is "seventy million, eight hundred forty thousand, five hundred fifty-one".