70769987 has 4 divisors (see below), whose sum is σ = 70832520. Its totient is φ = 70707456.

The previous prime is 70769983. The next prime is 70769989. The reversal of 70769987 is 78996707.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70769987 - 2² = 70769983 is a prime.

It is a super-3 number, since 3×70769987³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70769983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29537 + ... + 31842.

It is an arithmetic number, because the mean of its divisors is an integer number (17708130).

Almost surely, 2^70769987 is an apocalyptic number.

70769987 is a deficient number, since it is larger than the sum of its proper divisors (62533).

70769987 is a wasteful number, since it uses less digits than its factorization.

70769987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62532.

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 70769987 is about 8412.4899405586. The cubic root of 70769987 is about 413.6341353720.

The spelling of 70769987 in words is "seventy million, seven hundred sixty-nine thousand, nine hundred eighty-seven".