70861749 has 16 divisors (see below), whose sum is σ = 108243072. Its totient is φ = 40393728.

The previous prime is 70861741. The next prime is 70861751. The reversal of 70861749 is 94716807.

It is not a de Polignac number, because 70861749 - 2³ = 70861741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 70861749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70861741) 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 15 ways as a sum of consecutive naturals, for example, 5197 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (6765192).

Almost surely, 2^70861749 is an apocalyptic number.

It is an amenable number.

70861749 is a deficient number, since it is larger than the sum of its proper divisors (37381323).

70861749 is a wasteful number, since it uses less digits than its factorization.

70861749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 70861749 is about 8417.9420881828. The cubic root of 70861749 is about 413.8128340178.

The spelling of 70861749 in words is "seventy million, eight hundred sixty-one thousand, seven hundred forty-nine".