70687963 has 4 divisors (see below), whose sum is σ = 70742560. Its totient is φ = 70633368.

The previous prime is 70687937. The next prime is 70687979. The reversal of 70687963 is 36978607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36978607 = 193 ⋅191599.

It is a cyclic number.

It is not a de Polignac number, because 70687963 - 2⁹ = 70687451 is a prime.

It is a super-2 number, since 2×70687963² = 9993576226178738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70687933) 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, 25308 + ... + 27961.

It is an arithmetic number, because the mean of its divisors is an integer number (17685640).

Almost surely, 2^70687963 is an apocalyptic number.

70687963 is a deficient number, since it is larger than the sum of its proper divisors (54597).

70687963 is a wasteful number, since it uses less digits than its factorization.

70687963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54596.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 70687963 is about 8407.6133950129. The cubic root of 70687963 is about 413.4742698511.

The spelling of 70687963 in words is "seventy million, six hundred eighty-seven thousand, nine hundred sixty-three".