2069978 has 4 divisors (see below), whose sum is σ = 3104970. Its totient is φ = 1034988.

The previous prime is 2069959. The next prime is 2069983. The reversal of 2069978 is 8799602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1352569 + 717409 = 1163^2 + 847^2 .

It is a zygodrome in base 6.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517493 + ... + 517496.

2^2069978 is an apocalyptic number.

2069978 is a deficient number, since it is larger than the sum of its proper divisors (1034992).

2069978 is a wasteful number, since it uses less digits than its factorization.

2069978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034991.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2069978 is about 1438.7418114450. The cubic root of 2069978 is about 127.4447383226. Note that the first 3 decimals are identical.

The spelling of 2069978 in words is "two million, sixty-nine thousand, nine hundred seventy-eight".