350720987 has 4 divisors (see below), whose sum is σ = 350909520. Its totient is φ = 350532456.

The previous prime is 350720971. The next prime is 350720989. The reversal of 350720987 is 789027053.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789027053 = 1753 ⋅450101.

It is a cyclic number.

It is not a de Polignac number, because 350720987 - 2⁴ = 350720971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (350720989) 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, 91448 + ... + 95205.

It is an arithmetic number, because the mean of its divisors is an integer number (87727380).

Almost surely, 2^350720987 is an apocalyptic number.

350720987 is a deficient number, since it is larger than the sum of its proper divisors (188533).

350720987 is a wasteful number, since it uses less digits than its factorization.

350720987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188532.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 350720987 is about 18727.5462087269. The cubic root of 350720987 is about 705.2134470980.

The spelling of 350720987 in words is "three hundred fifty million, seven hundred twenty thousand, nine hundred eighty-seven".