3507978 has 8 divisors (see below), whose sum is σ = 7015968. Its totient is φ = 1169324.

The previous prime is 3507971. The next prime is 3507997. The reversal of 3507978 is 8797053.

It is a sphenic number, since it is the product of 3 distinct primes.

3507978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3507971) 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, 292326 + ... + 292337.

It is an arithmetic number, because the mean of its divisors is an integer number (876996).

Almost surely, 2^3507978 is an apocalyptic number.

3507978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3507978 is a wasteful number, since it uses less digits than its factorization.

3507978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584668.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 3507978 is about 1872.9596899026. The cubic root of 3507978 is about 151.9447225129.

The spelling of 3507978 in words is "three million, five hundred seven thousand, nine hundred seventy-eight".