68977919 has 8 divisors (see below), whose sum is σ = 70466352. Its totient is φ = 67504320.

The previous prime is 68977877. The next prime is 68977927. The reversal of 68977919 is 91977986.

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

It is a cyclic number.

It is not a de Polignac number, because 68977919 - 2⁸ = 68977663 is a prime.

It is a super-2 number, since 2×68977919² = 9515906619141122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68977819) 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, 5957 + ... + 13169.

It is an arithmetic number, because the mean of its divisors is an integer number (8808294).

Almost surely, 2^68977919 is an apocalyptic number.

68977919 is a deficient number, since it is larger than the sum of its proper divisors (1488433).

68977919 is a wasteful number, since it uses less digits than its factorization.

68977919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7417.

The product of its digits is 1714608, while the sum is 56.

The square root of 68977919 is about 8305.2946365556. The cubic root of 68977919 is about 410.1128362843.

It can be divided in two parts, 68977 and 919, that added together give a palindrome (69896).

The spelling of 68977919 in words is "sixty-eight million, nine hundred seventy-seven thousand, nine hundred nineteen".