78302701 has 2 divisors, whose sum is σ = 78302702. Its totient is φ = 78302700.

The previous prime is 78302681. The next prime is 78302729. The reversal of 78302701 is 10720387.

It is a happy number.

It is an a-pointer prime, because the next prime (78302729) can be obtained adding 78302701 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41409225 + 36893476 = 6435^2 + 6074^2 .

It is a cyclic number.

It is not a de Polignac number, because 78302701 - 2¹⁷ = 78171629 is a prime.

It is a super-2 number, since 2×78302701² = 12262625967790802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78302701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78308701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39151350 + 39151351.

It is an arithmetic number, because the mean of its divisors is an integer number (39151351).

Almost surely, 2^78302701 is an apocalyptic number.

It is an amenable number.

78302701 is a deficient number, since it is larger than the sum of its proper divisors (1).

78302701 is an equidigital number, since it uses as much as digits as its factorization.

78302701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 78302701 is about 8848.8813417290. The cubic root of 78302701 is about 427.8178632976.

It can be divided in two parts, 78302 and 701, that added together give a triangular number (79003 = T₃₉₇).

The spelling of 78302701 in words is "seventy-eight million, three hundred two thousand, seven hundred one".