70687801 has 4 divisors (see below), whose sum is σ = 70735504. Its totient is φ = 70640100.

The previous prime is 70687783. The next prime is 70687807. The reversal of 70687801 is 10878607.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10878607 = 1013 ⋅10739.

It is a cyclic number.

It is not a de Polignac number, because 70687801 - 2⁵ = 70687769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70687807) 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 3 ways as a sum of consecutive naturals, for example, 21555 + ... + 24616.

It is an arithmetic number, because the mean of its divisors is an integer number (17683876).

Almost surely, 2^70687801 is an apocalyptic number.

It is an amenable number.

70687801 is a deficient number, since it is larger than the sum of its proper divisors (47703).

70687801 is a wasteful number, since it uses less digits than its factorization.

70687801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47702.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 70687801 is about 8407.6037608822. The cubic root of 70687801 is about 413.4739539893.

The spelling of 70687801 in words is "seventy million, six hundred eighty-seven thousand, eight hundred one".