70550399 has 4 divisors (see below), whose sum is σ = 70567560. Its totient is φ = 70533240.

The previous prime is 70550393. The next prime is 70550411. The reversal of 70550399 is 99305507.

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 70550399 - 2¹² = 70546303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70550393) 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, 1664 + ... + 11994.

It is an arithmetic number, because the mean of its divisors is an integer number (17641890).

Almost surely, 2^70550399 is an apocalyptic number.

70550399 is a deficient number, since it is larger than the sum of its proper divisors (17161).

70550399 is a wasteful number, since it uses less digits than its factorization.

70550399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17160.

The product of its (nonzero) digits is 42525, while the sum is 38.

The square root of 70550399 is about 8399.4284924630. The cubic root of 70550399 is about 413.2058785107.

The spelling of 70550399 in words is "seventy million, five hundred fifty thousand, three hundred ninety-nine".