78690153 has 32 divisors (see below), whose sum is σ = 116213760. Its totient is φ = 47139840.

The previous prime is 78690119. The next prime is 78690169. The reversal of 78690153 is 35109687.

It is not a de Polignac number, because 78690153 - 2¹⁶ = 78624617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78690113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252868 + ... + 253178.

It is an arithmetic number, because the mean of its divisors is an integer number (3631680).

Almost surely, 2^78690153 is an apocalyptic number.

It is an amenable number.

78690153 is a deficient number, since it is larger than the sum of its proper divisors (37523607).

78690153 is a wasteful number, since it uses less digits than its factorization.

78690153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 78690153 is about 8870.7470373131. The cubic root of 78690153 is about 428.5223355353.

The spelling of 78690153 in words is "seventy-eight million, six hundred ninety thousand, one hundred fifty-three".