70451490 has 16 divisors (see below), whose sum is σ = 169083648. Its totient is φ = 18787056.

The previous prime is 70451471. The next prime is 70451509. The reversal of 70451490 is 9415407.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70451471) and next prime (70451509).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2348383 = 70451490 / (7 + 0 + 4 + 5 + 1 + 4 + 9 + 0).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174162 + ... + 1174221.

It is an arithmetic number, because the mean of its divisors is an integer number (10567728).

Almost surely, 2^70451490 is an apocalyptic number.

70451490 is an abundant number, since it is smaller than the sum of its proper divisors (98632158).

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

70451490 is a wasteful number, since it uses less digits than its factorization.

70451490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348393.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 70451490 is about 8393.5385863175. The cubic root of 70451490 is about 413.0126885122.

Adding to 70451490 its reverse (9415407), we get a palindrome (79866897).

The spelling of 70451490 in words is "seventy million, four hundred fifty-one thousand, four hundred ninety".