7463978 has 4 divisors (see below), whose sum is σ = 11195970. Its totient is φ = 3731988.

The previous prime is 7463971. The next prime is 7464007. The reversal of 7463978 is 8793647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8793647 = 2237 ⋅3931.

It can be written as a sum of positive squares in only one way, i.e., 5968249 + 1495729 = 2443^2 + 1223^2 .

It is not an unprimeable number, because it can be changed into a prime (7463971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1865993 + ... + 1865996.

Almost surely, 2^7463978 is an apocalyptic number.

7463978 is a deficient number, since it is larger than the sum of its proper divisors (3731992).

7463978 is a wasteful number, since it uses less digits than its factorization.

7463978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731991.

The product of its digits is 254016, while the sum is 44.

The square root of 7463978 is about 2732.0281843349. The cubic root of 7463978 is about 195.4294981949.

The spelling of 7463978 in words is "seven million, four hundred sixty-three thousand, nine hundred seventy-eight".