77480070 has 32 divisors (see below), whose sum is σ = 186662880. Its totient is φ = 20582400.

The previous prime is 77480069. The next prime is 77480071. The reversal of 77480070 is 7008477.

It is an interprime number because it is at equal distance from previous prime (77480069) and next prime (77480071).

It is a super-2 number, since 2×77480070² = 12006322494409800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77480071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3270 + ... + 12870.

It is an arithmetic number, because the mean of its divisors is an integer number (5833215).

Almost surely, 2^77480070 is an apocalyptic number.

77480070 is an abundant number, since it is smaller than the sum of its proper divisors (109182810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77480070 is a wasteful number, since it uses less digits than its factorization.

77480070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9880.

The product of its (nonzero) digits is 10976, while the sum is 33.

The square root of 77480070 is about 8802.2764101112. The cubic root of 77480070 is about 426.3143990441.

The spelling of 77480070 in words is "seventy-seven million, four hundred eighty thousand, seventy".