77072654 has 4 divisors (see below), whose sum is σ = 115608984. Its totient is φ = 38536326.

The previous prime is 77072623. The next prime is 77072659. The reversal of 77072654 is 45627077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45627077 = 769 ⋅59333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77072659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19268162 + ... + 19268165.

It is an arithmetic number, because the mean of its divisors is an integer number (28902246).

Almost surely, 2^77072654 is an apocalyptic number.

77072654 is a deficient number, since it is larger than the sum of its proper divisors (38536330).

77072654 is a wasteful number, since it uses less digits than its factorization.

77072654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38536329.

The product of its (nonzero) digits is 82320, while the sum is 38.

The square root of 77072654 is about 8779.1032571670. The cubic root of 77072654 is about 425.5658511276.

The spelling of 77072654 in words is "seventy-seven million, seventy-two thousand, six hundred fifty-four".