69964642 has 16 divisors (see below), whose sum is σ = 115251264. Its totient is φ = 31590000.

The previous prime is 69964633. The next prime is 69964663. The reversal of 69964642 is 24646996.

It is a super-2 number, since 2×69964642² = 9790102260376328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 69964592 and 69964601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7209 + ... + 13852.

It is an arithmetic number, because the mean of its divisors is an integer number (7203204).

Almost surely, 2^69964642 is an apocalyptic number.

69964642 is a deficient number, since it is larger than the sum of its proper divisors (45286622).

69964642 is a wasteful number, since it uses less digits than its factorization.

69964642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21225.

The product of its digits is 559872, while the sum is 46.

The square root of 69964642 is about 8364.4869537826. The cubic root of 69964642 is about 412.0591276248.

It can be divided in two parts, 699 and 64642, that added together give a triangular number (65341 = T₃₆₁).

The spelling of 69964642 in words is "sixty-nine million, nine hundred sixty-four thousand, six hundred forty-two".