69964861 has 4 divisors (see below), whose sum is σ = 72221824. Its totient is φ = 67707900.

The previous prime is 69964847. The next prime is 69964889. The reversal of 69964861 is 16846996.

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.

It is a cyclic number.

It is not a de Polignac number, because 69964861 - 2¹³ = 69956669 is a prime.

It is the 8365-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69964801) by changing a digit.

It is a nontrivial repunit in base 8364.

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, 1128435 + ... + 1128496.

It is an arithmetic number, because the mean of its divisors is an integer number (18055456).

Almost surely, 2^69964861 is an apocalyptic number.

It is an amenable number.

69964861 is a deficient number, since it is larger than the sum of its proper divisors (2256963).

69964861 is a wasteful number, since it uses less digits than its factorization.

69964861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256962.

The product of its digits is 559872, while the sum is 49.

The square root of 69964861 is about 8364.5000448323. The cubic root of 69964861 is about 412.0595575603.

The spelling of 69964861 in words is "sixty-nine million, nine hundred sixty-four thousand, eight hundred sixty-one".