70143864 has 32 divisors (see below), whose sum is σ = 200411520. Its totient is φ = 20041056.

The previous prime is 70143847. The next prime is 70143869. The reversal of 70143864 is 46834107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70143869) 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, 208594 + ... + 208929.

It is an arithmetic number, because the mean of its divisors is an integer number (6262860).

Almost surely, 2^70143864 is an apocalyptic number.

It is an amenable number.

70143864 is an abundant number, since it is smaller than the sum of its proper divisors (130267656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70143864 is a wasteful number, since it uses less digits than its factorization.

70143864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417539 (or 417535 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 70143864 is about 8375.1933709020. The cubic root of 70143864 is about 412.4106723010.

It can be divided in two parts, 7014 and 3864, that added together give a triangular number (10878 = T₁₄₇).

The spelling of 70143864 in words is "seventy million, one hundred forty-three thousand, eight hundred sixty-four".