97798651 has 4 divisors (see below), whose sum is σ = 98977032. Its totient is φ = 96620272.

The previous prime is 97798609. The next prime is 97798661. The reversal of 97798651 is 15689779.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15689779 = 7 ⋅2241397.

It is a cyclic number.

It is not a de Polignac number, because 97798651 - 2¹⁷ = 97667579 is a prime.

It is a super-2 number, since 2×97798651² = 19129152274839602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97798661) 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, 589066 + ... + 589231.

It is an arithmetic number, because the mean of its divisors is an integer number (24744258).

Almost surely, 2^97798651 is an apocalyptic number.

97798651 is a deficient number, since it is larger than the sum of its proper divisors (1178381).

97798651 is a wasteful number, since it uses less digits than its factorization.

97798651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178380.

The product of its digits is 952560, while the sum is 52.

The square root of 97798651 is about 9889.3200474047. The cubic root of 97798651 is about 460.7276621227.

The spelling of 97798651 in words is "ninety-seven million, seven hundred ninety-eight thousand, six hundred fifty-one".