77072097 has 8 divisors (see below), whose sum is σ = 104447680. Its totient is φ = 50538960.

The previous prime is 77072081. The next prime is 77072137. The reversal of 77072097 is 79027077.

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

It is not a de Polignac number, because 77072097 - 2⁴ = 77072081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77077097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210397 + ... + 210762.

It is an arithmetic number, because the mean of its divisors is an integer number (13055960).

Almost surely, 2^77072097 is an apocalyptic number.

It is an amenable number.

77072097 is a deficient number, since it is larger than the sum of its proper divisors (27375583).

77072097 is a wasteful number, since it uses less digits than its factorization.

77072097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421223.

The product of its (nonzero) digits is 43218, while the sum is 39.

The square root of 77072097 is about 8779.0715340519. The cubic root of 77072097 is about 425.5648259445.

The spelling of 77072097 in words is "seventy-seven million, seventy-two thousand, ninety-seven".