77493007 has 4 divisors (see below), whose sum is σ = 77715400. Its totient is φ = 77270616.

The previous prime is 77492983. The next prime is 77493011. The reversal of 77493007 is 70039477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70039477 = 2311 ⋅30307.

It is a cyclic number.

It is not a de Polignac number, because 77493007 - 2¹⁹ = 76968719 is a prime.

It is a super-2 number, since 2×77493007² = 12010332267804098, 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 (77493037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110673 + ... + 111370.

It is an arithmetic number, because the mean of its divisors is an integer number (19428850).

Almost surely, 2^77493007 is an apocalyptic number.

77493007 is a deficient number, since it is larger than the sum of its proper divisors (222393).

77493007 is a wasteful number, since it uses less digits than its factorization.

77493007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222392.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 77493007 is about 8803.0112461589. The cubic root of 77493007 is about 426.3381252421.

The spelling of 77493007 in words is "seventy-seven million, four hundred ninety-three thousand, seven".