97778656 has 12 divisors (see below), whose sum is σ = 192501792. Its totient is φ = 48889312.

The previous prime is 97778641. The next prime is 97778663. The reversal of 97778656 is 65687779.

It is a junction number, because it is equal to n+sod(n) for n = 97778597 and 97778606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1527760 + ... + 1527823.

It is an arithmetic number, because the mean of its divisors is an integer number (16041816).

Almost surely, 2^97778656 is an apocalyptic number.

It is an amenable number.

97778656 is a deficient number, since it is larger than the sum of its proper divisors (94723136).

97778656 is a wasteful number, since it uses less digits than its factorization.

97778656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055593 (or 3055585 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 55.

The square root of 97778656 is about 9888.3090566588. The cubic root of 97778656 is about 460.6962612892.

The spelling of 97778656 in words is "ninety-seven million, seven hundred seventy-eight thousand, six hundred fifty-six".