70691652 has 18 divisors (see below), whose sum is σ = 178692878. Its totient is φ = 23563872.

The previous prime is 70691641. The next prime is 70691653. The reversal of 70691652 is 25619607.

It can be written as a sum of positive squares in only one way, i.e., 63107136 + 7584516 = 7944^2 + 2754^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1963657 = 70691652 / (7 + 0 + 6 + 9 + 1 + 6 + 5 + 2).

It is not an unprimeable number, because it can be changed into a prime (70691653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 981793 + ... + 981864.

Almost surely, 2^70691652 is an apocalyptic number.

It is an amenable number.

70691652 is an abundant number, since it is smaller than the sum of its proper divisors (108001226).

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

70691652 is a wasteful number, since it uses less digits than its factorization.

70691652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963667 (or 1963662 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 70691652 is about 8407.8327766435. The cubic root of 70691652 is about 413.4814624008.

The spelling of 70691652 in words is "seventy million, six hundred ninety-one thousand, six hundred fifty-two".