97778433 has 16 divisors (see below), whose sum is σ = 134862336. Its totient is φ = 62949120.

The previous prime is 97778411. The next prime is 97778437. The reversal of 97778433 is 33487779.

It is a happy number.

It is not a de Polignac number, because 97778433 - 2¹³ = 97770241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97778437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62185 + ... + 63737.

It is an arithmetic number, because the mean of its divisors is an integer number (8428896).

Almost surely, 2^97778433 is an apocalyptic number.

97778433 is a gapful number since it is divisible by the number (93) formed by its first and last digit.

It is an amenable number.

97778433 is a deficient number, since it is larger than the sum of its proper divisors (37083903).

97778433 is a wasteful number, since it uses less digits than its factorization.

97778433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264.

The product of its digits is 889056, while the sum is 48.

The square root of 97778433 is about 9888.2977807103. The cubic root of 97778433 is about 460.6959110582.

The spelling of 97778433 in words is "ninety-seven million, seven hundred seventy-eight thousand, four hundred thirty-three".