73780678 has 8 divisors (see below), whose sum is σ = 110709072. Its totient is φ = 36877656.

The previous prime is 73780657. The next prime is 73780687. The reversal of 73780678 is 87608737.

It is a happy number.

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

It is a super-2 number, since 2×73780678² = 10887176892279368, which contains 22 as substring.

It is a congruent number.

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, 4951 + ... + 13117.

It is an arithmetic number, because the mean of its divisors is an integer number (13838634).

Almost surely, 2^73780678 is an apocalyptic number.

73780678 is a deficient number, since it is larger than the sum of its proper divisors (36928394).

73780678 is a wasteful number, since it uses less digits than its factorization.

73780678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12686.

The product of its (nonzero) digits is 395136, while the sum is 46.

The square root of 73780678 is about 8589.5679751662. The cubic root of 73780678 is about 419.4184657734.

The spelling of 73780678 in words is "seventy-three million, seven hundred eighty thousand, six hundred seventy-eight".