97777690 has 8 divisors (see below), whose sum is σ = 175999860. Its totient is φ = 39111072.

The previous prime is 97777679. The next prime is 97777711. The reversal of 97777690 is 9677779.

It can be written as a sum of positive squares in 2 ways, for example, as 90611361 + 7166329 = 9519^2 + 2677^2 .

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

It is a super-2 number, since 2×97777690² = 19120953323472200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4888875 + ... + 4888894.

Almost surely, 2^97777690 is an apocalyptic number.

97777690 is a deficient number, since it is larger than the sum of its proper divisors (78222170).

97777690 is a wasteful number, since it uses less digits than its factorization.

97777690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9777776.

The product of its (nonzero) digits is 1166886, while the sum is 52.

The square root of 97777690 is about 9888.2602109775. The cubic root of 97777690 is about 460.6947441413.

The spelling of 97777690 in words is "ninety-seven million, seven hundred seventy-seven thousand, six hundred ninety".